ATLANTIC RICHFIELD CO /DE
424B4, 1994-08-02
PETROLEUM REFINING
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<PAGE>

                                                FILED PURSUANT TO RULE 424(b)(4)
                                                       REGISTRATION NO. 33-53481

       
                         35,000,000 EXCHANGEABLE NOTES
 
                          ATLANTIC RICHFIELD COMPANY
 
[LOGO OF ARCO]

                  
               9% EXCHANGEABLE NOTES DUE SEPTEMBER 15, 1997     
(SUBJECT TO EXCHANGE INTO SHARES OF COMMON STOCK, PAR VALUE $1.00 PER SHARE,
OF LYONDELL PETROCHEMICAL COMPANY)
                                --------------
  Of the 35,000,000 Exchangeable Notes offered, 30,000,000 Exchangeable Notes
are being offered hereby in the United States and 5,000,000 Exchangeable Notes
are being offered in a concurrent international offering outside the United
States. The initial public offering price and the aggregate underwriting
discount per Exchangeable Note will be identical for both offerings. See
"Underwriting."
   
  The principal amount of each of the 9% Exchangeable Notes due September 15,
1997 of Atlantic Richfield Company ("ARCO") being offered hereby will be
$24.75 (the closing price of the common stock, par value $1.00 per share, of
Lyondell Petrochemical Company on August 1, 1994, as reported on the New York
Stock Exchange Composite Tape) (the "Initial Price"). The Exchangeable Notes
will mature on September 15, 1997. Interest on the Exchangeable Notes, at the
rate of 9% of the principal amount per annum, is payable quarterly in arrears
on March 15, June 15, September 15 and December 15, beginning September 15,
1994. Exchangeable Notes are not subject to redemption or any sinking fund
prior to maturity.     
   
  At maturity (including as a result of acceleration or otherwise), the
principal amount of each Exchangeable Note will be mandatorily exchanged by
ARCO into a number of shares of Lyondell Common Stock (or, at ARCO's option,
cash with an equal value) at the Exchange Rate. The Exchange Rate is equal to,
subject to certain adjustments, (a) if the Maturity Price per share of
Lyondell Common Stock is greater than or equal to $27.72 per share of Lyondell
Common Stock (the "Threshold Appreciation Price"), .8929 shares of Lyondell
Common Stock per Exchangeable Note, (b) if the Maturity Price is less than the
Threshold Appreciation Price but is greater than the Initial Price, a
fractional share of Lyondell Common Stock per Exchangeable Note so that the
value thereof at the Maturity Price equals the Initial Price and (c) if the
Maturity Price is less than or equal to the Initial Price, one share of
Lyondell Common Stock per Exchangeable Note. The "Maturity Price" means the
average Closing Price per share of Lyondell Common Stock on the 20 Trading
Days immediately prior to maturity. Accordingly, holders of the Exchangeable
Notes will not necessarily receive an amount equal to the principal amount
thereof. The Exchangeable Notes will be unsecured obligations of ARCO ranking
pari passu with all of its other unsecured and unsubordinated indebtedness.
Lyondell will have no obligations with respect to the Exchangeable Notes. See
"Description of the Exchangeable Notes."     
 
  Attached hereto as Appendix A and included as part of this Prospectus is a
prospectus of Lyondell covering the shares of Lyondell Common Stock which may
be received by a holder of Exchangeable Notes at maturity. The Lyondell
prospectus relates to an aggregate of 39,921,400 shares of Lyondell Common
Stock.
 
  PROSPECTIVE INVESTORS ARE ADVISED TO CONSIDER CAREFULLY THE INFORMATION
CONTAINED UNDER "SPECIAL CONSIDERATIONS RELATING TO EXCHANGEABLE NOTES."
 
  For a discussion of certain United States federal income tax consequences
for holders of Exchangeable Notes, see "Certain United States Federal Income
Tax Considerations."
 
  The Lyondell Common Stock is listed on the New York Stock Exchange ("NYSE")
under the symbol LYO.
   
  The Exchangeable Notes have been approved for listing on the NYSE under the
symbol "LYX."     
       
                                --------------
     THESE SECURITIES  HAVE  NOT BEEN  APPROVED OR  DISAPPROVED  BY THE
      SECURITIES  AND  EXCHANGE  COMMISSION OR  ANY  STATE  SECURITIES
        COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR
         ANY STATE  SECURITIES COMMISSION PASSED UPON  THE ACCURACY
          OR  ADEQUACY OF THIS  PROSPECTUS. ANY REPRESENTATION  TO
            THE CONTRARY IS A CRIMINAL OFFENSE.
                                --------------
<TABLE>
<CAPTION>
                                            PRICE TO   UNDERWRITING PROCEEDS TO
                                           PUBLIC (1)  DISCOUNT (2) ARCO (1) (3)
                                           ----------  ------------ ------------
<S>                                       <C>          <C>          <C>
Per Exchangeable Note....................    $24.75       $0.75        $24.00
Total (4)................................ $866,250,000 $26,250,000  $840,000,000
</TABLE>
- -------
   
(1) Plus accrued interest, if any, from August 8, 1994.     
(2) ARCO and the Company have agreed to indemnify the Underwriters against
    certain liabilities, including liabilities under the Securities Act of
    1933.
(3) Before deducting expenses payable by ARCO estimated to be $3,500,000.
   
(4) ARCO has granted the Underwriters an option, exercisable within 30 days
    from the date hereof, to purchase up to an additional 4,921,400
    Exchangeable Notes at the Price to Public, less Underwriting Discount, for
    the purpose of covering over-allotments, if any. If the Underwriters
    exercise such option in full, the total Price to Public, Underwriting
    Discount, and Proceeds to ARCO will be $988,054,650, $29,941,050 and
    $958,113,600, respectively. See "Underwriting."     
                                --------------
   
  The Exchangeable Notes are offered subject to receipt and acceptance by the
U.S. Underwriters, to prior sale and to their right to reject any order in
whole or in part and to withdraw, cancel or modify the offer without notice.
It is expected that certificates for the Exchangeable Notes will be ready for
delivery in New York, New York, on or about August 8, 1994.     
 
GOLDMAN, SACHS & CO.
                              MERRILL LYNCH & CO.
                                                           SALOMON BROTHERS INC
                                --------------
                 
              The date of this Prospectus is August 1, 1994.     
<PAGE>
 
                             AVAILABLE INFORMATION
 
  ARCO is subject to the informational requirements of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), and in accordance therewith files
reports with the Securities and Exchange Commission (the "Commission").
Reports, proxy statements, and other information filed by ARCO with the
Commission pursuant to the informational requirements of the Exchange Act can
be inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549, Seven World Trade Center, 13th Floor, New York, New York 10048 and
Chicago Regional Office, Northwestern Atrium Center, 500 West Madison Street,
Suite 1400, Chicago, Illinois 60661-2511. Copies of such material can also be
obtained upon written request addressed to the Securities and Exchange
Commission, Public Reference Section, Room 1024, 450 Fifth Street, N.W.,
Washington, D.C. 20549 at prescribed rates. Such reports, proxy statements and
other information can also be inspected at the offices of the New York Stock
Exchange ("NYSE"), on which one or more of ARCO's securities are listed.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
  ARCO incorporates herein by this reference the following documents filed
pursuant to the Exchange Act, which also have been filed with the Commission
(File No. 1-1196):
 
    (a) ARCO's Annual Report on Form 10-K for the year ended December 31,
  1993;
 
    (b) ARCO's Current Reports on Form 8-K dated March 28, 1994 and July 25,
  1994; and
 
    (c) ARCO's Report on Form 10-Q for the quarterly period ended March 31,
  1994.
 
  All documents filed by ARCO pursuant to Sections 13(a), 13(c), 13(d), 14 and
15(d) of the Exchange Act after the date hereof and prior to the termination of
the offering of the Exchangeable Notes offered hereby (collectively with the
documents referenced above the " '34 Act Reports") shall be deemed to be
incorporated by reference herein and to be a part hereof from the date of
filing of such documents.
 
  ARCO WILL FURNISH WITHOUT CHARGE TO EACH PERSON, INCLUDING ANY BENEFICIAL
OWNER, TO WHOM THIS PROSPECTUS IS DELIVERED, UPON WRITTEN OR ORAL REQUEST OF
SUCH PERSON, A COPY OF ANY AND ALL OF THE '34 ACT REPORTS INCORPORATED HEREIN
BY REFERENCE (NOT INCLUDING EXHIBITS TO SUCH REPORTS, UNLESS SUCH EXHIBITS ARE
SPECIFICALLY INCORPORATED BY REFERENCE INTO SUCH REPORTS) AND ANY OTHER
DOCUMENTS SPECIFICALLY IDENTIFIED HEREIN AS INCORPORATED BY REFERENCE INTO THE
REGISTRATION STATEMENT TO WHICH THIS PROSPECTUS RELATES, OR INTO ANOTHER '34
ACT REPORT OF ARCO. REQUESTS SHOULD BE ADDRESSED TO: JUNE WORTH, SECURITIES
REGULATION COORDINATOR, ATLANTIC RICHFIELD COMPANY, 515 SOUTH FLOWER STREET,
LOS ANGELES, CALIFORNIA 90071 (TELEPHONE: 213-486-1450).
 
  IN CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE EXCHANGEABLE
NOTES AND THE LYONDELL COMMON STOCK AT LEVELS ABOVE THOSE WHICH MIGHT OTHERWISE
PREVAIL IN THE OPEN MARKET. SUCH TRANSACTIONS MAY BE EFFECTED ON THE NEW YORK
STOCK EXCHANGE OR OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE
DISCONTINUED AT ANY TIME.
 
                                       2
<PAGE>
 
             SPECIAL CONSIDERATIONS RELATING TO EXCHANGEABLE NOTES
 
  As described in more detail below, the trading price of the Exchangeable
Notes may vary considerably prior to maturity (including by acceleration or
otherwise, "Maturity") due to, among other things, fluctuations in the price of
Lyondell Common Stock and other events that are difficult to predict and beyond
ARCO's control.
 
COMPARISON TO OTHER DEBT SECURITIES; RELATIONSHIP TO LYONDELL COMMON STOCK
 
  The terms of the Exchangeable Notes differ from those of ordinary debt
securities in that the amount that a holder of the Exchangeable Notes will
receive upon mandatory exchange of the principal amount thereof at Maturity is
not fixed, but is based on the price of the Lyondell Common Stock as specified
in the Exchange Rate (as defined under "Description of the Exchangeable
Notes"). There can be no assurance that such amount receivable by such holder
upon exchange at Maturity will be equal to or greater than the principal amount
of the Exchangeable Notes. For example, if the Maturity Price of the Lyondell
Common Stock is less than the Initial Price, such amount receivable upon
exchange will be less than the principal amount paid for the Exchangeable
Notes, in which case an investment in Exchangeable Notes may result in a loss.
   
  In addition, the opportunity for equity appreciation afforded by an
investment in the Exchangeable Notes is less than the opportunity for equity
appreciation afforded by an investment in the Lyondell Common Stock because the
amount receivable by holders of the Exchangeable Notes upon exchange at
Maturity will only exceed the principal amount of such Exchangeable Notes if
the Maturity Price exceeds the Threshold Appreciation Price (which represents
an appreciation of 12% of the Initial Price). Holders of the Exchangeable Notes
will only be entitled to receive upon exchange at Maturity 89.29% of any
appreciation of the value of Lyondell Common Stock in excess of the Threshold
Appreciation Price. Because the price of the Lyondell Common Stock is subject
to market fluctuations, the value of the Lyondell Common Stock (or, at the
option of the Company, the amount of cash) received by a holder of Exchangeable
Notes upon exchange at Maturity, determined as described herein, may be more or
less than the principal amount of the Exchangeable Notes.     
 
  It is impossible to predict whether the price of Lyondell Common Stock will
rise or fall. Trading prices of Lyondell Common Stock will be influenced by
Lyondell's operational results and by complex and interrelated political,
economic, financial and other factors that can affect the commodity
petrochemical and refining markets generally. See the prospectus relating to
Lyondell and to Lyondell Common Stock attached hereto as Appendix A and
included as part of this Prospectus.
 
DILUTION OF LYONDELL COMMON STOCK
 
  The amount that holders of the Exchangeable Notes are entitled to receive
upon the mandatory exchange at Maturity is subject to adjustment for certain
events arising from stock splits and combinations, stock dividends and certain
other actions of Lyondell that modify its capital structure. See "Description
of the Exchangeable Notes--Dilution Adjustments." Moreover, the amount to be
received by Note holders upon exchange at Maturity may not be adjusted for
other events, such as offerings of Lyondell Common Stock for cash or in
connection with acquisitions, that may adversely affect the price of the
Lyondell Common Stock and, because of the relationship of such amount to be
received upon exchange to the price of Lyondell Common Stock, such other events
may adversely affect the trading price of the Exchangeable Notes. There can be
no assurance that Lyondell will not make offerings of Lyondell Common Stock or
take such other action in the future or as to the amount of such offerings, if
any. In addition, until such time as ARCO shall deliver shares of Lyondell
Common Stock to holders of the Exchangeable Notes at Maturity thereof (in the
event ARCO does not exercise its option to deliver cash), holders of the
Exchangeable Notes will not be entitled to any rights with respect to the
Lyondell Common Stock (including without limitation voting rights and the
rights to receive any dividends or other distributions in respect thereof).
 
                                       3
<PAGE>
 
POSSIBLE ILLIQUIDITY OF THE SECONDARY MARKET
 
  It is not possible to predict how the Exchangeable Notes will trade in the
secondary market or whether such market will be liquid or illiquid.
Exchangeable Notes are novel and innovative securities and there is currently
no secondary market for the Exchangeable Notes. The Underwriters currently
intend, but are not obligated, to make a market in the Exchangeable Notes.
There can be no assurance that a secondary market will develop or, if a
secondary market does develop, that it will provide the holders of the
Exchangeable Notes with liquidity of investment or that it will continue for
the life of the Exchangeable Notes.
   
  The Exchangeable Notes have been approved for listing on the NYSE. However,
there can be no assurance that the Exchangeable Notes will not later be
delisted or that trading in the Exchangeable Notes on the NYSE will not be
suspended. In the event of a delisting or suspension of trading on such
exchange, ARCO will apply for listing of the Exchangeable Notes on another
national securities exchange or for quotation on another trading market. If
the Exchangeable Notes are not listed or traded on any securities exchange or
trading market, or if trading of the Exchangeable Notes is suspended, pricing
information for the Exchangeable Notes may be more difficult to obtain, and
the liquidity of the Exchangeable Notes may be adversely affected.     
 
NO OBLIGATION ON THE PART OF LYONDELL WITH RESPECT TO THE EXCHANGEABLE NOTES
 
  Lyondell has no obligations with respect to the Exchangeable Notes or
amounts to be paid to holders thereof, including any obligation to take the
needs of ARCO or of holders of the Exchangeable Notes into consideration for
any reason. Lyondell will not receive any of the proceeds of the offering of
the Exchangeable Notes made hereby and is not responsible for the
determination of the timing of, prices for or quantities of the Exchangeable
Notes to be issued or the determination or calculation of the amount to be
paid upon mandatory exchange at Maturity.
 
WITHDRAWAL BY ARCO OF ACTIVE INVOLVEMENT IN LYONDELL
 
  Following consummation of the offering, ARCO currently intends, but is not
committed by any agreement or otherwise, to vote its shares of Lyondell Common
Stock proportionately to the votes cast by the non-ARCO stockholders,
including with respect to the election of directors, except under certain
circumstances. ARCO has agreed, during the period the Exchangeable Notes are
outstanding, to limit certain of its rights as a stockholder of Lyondell,
including its right to call a special meeting of stockholders, to take action
by written consent, to solicit proxies in respect of the election of directors
or certain other matters, and to initiate or solicit proposals by a single
entity or group of affiliated entities to acquire all or substantially all of
the Lyondell Common Stock or otherwise to acquire Lyondell. ARCO also intends
to cause the five ARCO officers who currently serve on Lyondell's Board of
Directors to resign following issuance of the Exchangeable Notes; however,
ARCO will retain the right to nominate and vote for candidates for Lyondell's
Board of Directors. ARCO is not required to retain its shares of Lyondell
Common Stock pursuant to the terms of the Exchangeable Notes or otherwise.
ARCO remains free to sell all or any portion of its Lyondell Common Stock in a
public or private offering intended to result in widespread distribution or
pursuant to a tender or exchange offer; subject to the foregoing, ARCO has
agreed, during the period the Exchangeable Notes are outstanding, and
continuing for a period of one year thereafter, not to sell all or any portion
of its Lyondell Common Stock to a single entity or group of affiliated
entities in a private transaction without the approval of Lyondell's Board of
Directors. For all of these reasons, there can be no assurance that ARCO will
have any influence over the actions and decisions taken and made by Lyondell
following consummation of the offering.
 
                          ATLANTIC RICHFIELD COMPANY
 
  Atlantic Richfield Company ("ARCO") was incorporated in 1870 under the laws
of Pennsylvania as The Atlantic Refining Company. Atlantic Petroleum Storage
Company, a predecessor to The Atlantic Refining Company, began operations in
1866. ARCO's principal executive offices are at 515 South Flower
 
                                       4
<PAGE>
 
Street, Los Angeles, California 90071 (Telephone (213) 486-3511). ARCO's
present name was adopted subsequent to the merger of Richfield Oil Corporation
into The Atlantic Refining Company in 1966. In 1969, Sinclair Oil Corporation
was merged into ARCO. In 1977, The Anaconda Company was merged into a wholly
owned subsidiary of ARCO and, on December 31, 1981, that subsidiary was merged
into ARCO. On May 7, 1985, ARCO was reincorporated in the State of Delaware.
Unless indicated otherwise, the term "ARCO" as used herein refers to Atlantic
Richfield Company or Atlantic Richfield Company and one or more of its
consolidated subsidiaries.
 
  ARCO, including its subsidiaries, constitutes one of the largest integrated
enterprises in the petroleum industry, with its principal operations conducted
in the United States. ARCO conducts operations in two business segments:
resources and products. ARCO also owns a 49.9 percent equity interest in
Lyondell, or 39,921,400 shares of Lyondell Common Stock, which operates
petrochemical and petroleum processing businesses.
 
  ARCO's resources segment includes the exploration, development and
production of petroleum, which includes petroleum liquids (crude oil,
condensate and natural gas liquids ("NGLs")) and natural gas, the purchase and
sale of petroleum liquids and natural gas, and the mining and sale of coal.
The exploration, development and production of all of ARCO's oil and gas
interests in the State of Alaska and surrounding offshore waters are conducted
through a wholly owned subsidiary, ARCO Alaska, Inc. The exploration,
development and production of ARCO's oil and gas interests in foreign
countries are conducted through the ARCO International Oil and Gas division.
The mining and marketing of coal from surface and underground mines located in
the western United States and in Australia are conducted through the ARCO Coal
division.
 
  In October 1993, ARCO reorganized the ARCO Oil and Gas division, which
operated ARCO's Lower 48 exploration, development, production and marketing
activities. The cornerstone of ARCO's program to reorganize its Lower 48
operations is Vastar Resources, Inc. ("Vastar"), which on a stand alone basis
is one of the largest independent (non-integrated) oil and gas companies in
the United States. On July 5, 1994, Vastar consummated the sale of 17,250,000
shares of its Common Stock to the public at an initial offering price of $28
per share. ARCO currently owns 80,000,001 shares of Vastar's Common Stock,
which represents 82.3% of Vastar's outstanding Common Stock. Net proceeds to
Vastar were $457 million. Vastar is engaged in the exploration for and the
development and production of natural gas and, to a lesser extent, crude oil
in selected major producing basins in the Gulf of Mexico, the Gulf Coast, the
San Juan Basin and the Mid-Continent areas. ARCO conducts its other operations
in the Lower 48 through its ARCO Permian business unit, which exploits long-
lived producing fields in the Permian and East Texas basins; its ARCO Western
Energy business unit, which focuses on oil production primarily from five
producing oil fields in California and related cogeneration operations; and
ARCO Long Beach Inc., a wholly-owned subsidiary, which manages the optimized
waterflood program for the Long Beach unit of the Wilmington Field pursuant to
a contractual arrangement with the State of California and the City of Long
Beach.
 
  ARCO's products segment includes the refining and transportation of
petroleum and petroleum products, the marketing of petroleum products on the
West Coast and the manufacture and sale of intermediate chemicals and
specialty products. The ARCO Products division is a refiner and marketer of
refined petroleum products on the West Coast. ARCO Chemical Company, a
subsidiary of which ARCO owns 83.3 percent ("ARCO Chemical"), produces and
markets on a worldwide basis certain intermediate chemicals and specialty
products, including propylene oxide and its derivatives, tertiary butyl
alcohol and its derivatives, and styrene monomer and its derivatives. The ARCO
Transportation division operates domestic facilities for the transportation
and storage of petroleum liquids, refined petroleum products, petrochemicals
and natural gas.
 
                                       5
<PAGE>
 
                                USE OF PROCEEDS
 
  Proceeds to be received from the sale of the Exchangeable Notes offered
hereby will be used, together with internally generated funds, for general
corporate purposes, including capital expenditures and retirement of
indebtedness. Pending ultimate application, the proceeds from the sale of the
Exchangeable Notes will be invested in marketable securities.
 
                         LYONDELL PETROCHEMICAL COMPANY
 
  ARCO owns a 49.9 percent equity interest in Lyondell, or 39,921,400 shares of
Lyondell Common Stock, which is accounted for on the equity method. Prior to
1989, Lyondell was first a division and then a wholly-owned subsidiary of ARCO.
 
  Lyondell is a manufacturer and marketer of petrochemicals and, through its
interest in LYONDELL-CITGO Refining Company Ltd. ("LCR"), a manufacturer of
refined petroleum products. Lyondell produces a wide variety of petrochemicals,
including olefins (primarily ethylene, propylene and butadiene), polyolefins
(low density polyethylene and polypropylene), methanol, MTBE (methyl tertiary
butyl ether) and aromatics. Lyondell's refining business is conducted through
its approximate 90 percent interest in LCR, which operates a 265,000 barrels
per day refinery (the "Refinery"). LCR sells the majority of the gasoline, jet
fuel and heating oil it produces to CITGO Petroleum Corporation ("CITGO"),
which currently has an approximate 10 percent interest in LCR.
 
  For the year ended December 31, 1993, Lyondell recorded total revenues of
approximately $263 million from sales of petrochemical products to ARCO
Chemical. Lyondell also provides certain plant services at facilities owned by
ARCO Chemical on Lyondell property. ARCO Chemical in turn provides certain
feedstocks and supplies to Lyondell. Lyondell historically purchased a portion
of its crude oil, natural gas and NGLs requirements from ARCO. Lyondell
currently purchases certain of these requirements from ARCO's Lower 48 business
units under short-term contracts and/or on the spot market at prices based on
prevailing market prices. In addition, Lyondell and ARCO have entered into a
services agreement and various leases, technology transfers and licenses and
other arrangements. Lyondell has various lease agreements with ARCO Pipe Line
Company ("APL"), including one relating to APL's private pipeline systems.
During 1993, Lyondell paid ARCO and its consolidated subsidiaries an aggregate
of $73 million under these agreements, arrangements and transactions and
received an aggregate of $278 million, including sales to ARCO Chemical.
 
  In July 1993, Lyondell and CITGO, a subsidiary of Petroleos de Venezuela,
S.A. ("PDVSA"), the Venezuelan national oil company, created LCR, a jointly
owned Texas limited liability company that owns and operates Lyondell's
refining business. Lyondell contributed its refining assets (including the lube
oil blending and packaging plant in Birmingport, Alabama) and refining working
capital to LCR. CITGO contributed $100 million to LCR in 1993 (excluding its
contribution towards the upgrade project described below) giving it an
approximate 10 percent interest in LCR. Prior to the in-service date for the
upgrade project, CITGO is required to reinvest its share of LCR's operating
cash flow and thereby increase its interest in LCR. LCR is undertaking a major
upgrade project at the Refinery to enable the facility to process substantial
additional volumes of very heavy crude oil. The upgrade project, which is
subject to regulatory approvals and the resolution of certain other matters, is
intended to increase the heavy crude oil processing capability of the Refinery
from approximately 130,000 barrels per day of 22 degree API gravity crude oil
to approximately 200,000 barrels per day of 17 degree API gravity Venezuelan
crude oil in a full conversion mode. The upgrade is not intended to increase
the total throughput of the Refinery, but rather its ability to process heavier
crude oil. The cost of the upgrade project, based on the detailed engineering
completed to date, currently is estimated to be approximately $830 million. In
addition, LCR has estimated a 15 percent ($125 million) allowance for
contingency costs, which would increase the total project cost estimate to
approximately $955 million. Completion of the upgrade project is anticipated in
late 1996 or early 1997.
 
                                       6
<PAGE>
 
  CITGO is required to fund the first phase ($300 million) of the upgrade
project. The second phase is expected to be funded through an LCR borrowing
and the third phase is anticipated to be funded: (i) 50 percent through an LCR
borrowing, (ii) 25 percent through CITGO contributions and (iii) 25 percent
through subordinated loans of Lyondell.
 
  The timing of the third phase and the level of contributions from Lyondell
and CITGO will depend on the total cost of the upgrade project and/or LCR's
ability to obtain construction financing. In the event that LCR is unable to
obtain construction financing for the refinery upgrade project, Lyondell and
CITGO each are obligated to fund one-half of the cost of the upgrade project
in excess of $300 million.
 
  In exchange for CITGO's upgrade project contributions described above, the
reinvestment of its share of cash flows and an additional $30 million cash
contribution at the in-service date, CITGO's interest in LCR is expected to
increase to approximately 40 percent effective as of the in-service date.
CITGO will have a one-time option to increase its interest in LCR up to 50
percent during the 20-month period following the in-service date. In addition,
in 1993 an affiliate of PDVSA entered into a 25-year contract to supply and
LCR to purchase specified quantities of heavy crude oil. At the same time,
CITGO entered into a long-term Products Agreement with LCR to purchase at
market-based prices the full volume of gasoline, jet fuel and heating oil
manufactured at the Refinery following the expiration of one contract retained
by Lyondell. The upgrade project also will expand the Refinery's ability to
produce low-sulfur diesel and reformulated fuel.
 
  For additional information about Lyondell, see the Lyondell Prospectus
attached hereto as Appendix A. A copy of Lyondell's 1993 Annual Report to
Stockholders and 1993 Annual Report on Form 10-K can be obtained by writing to
Investor Relations, Lyondell Petrochemical Company, One Houston Center, 1221
McKinney Street, Houston, Texas 77010. Lyondell's telephone number is (713)
652-7200.
 
 
                                       7
<PAGE>
 
                     RELATIONSHIP BETWEEN ARCO AND LYONDELL
 
  ARCO, which prior to January 1989 owned 100 percent of the outstanding
Lyondell Common Stock, presently owns for its own account approximately 49.9
percent (39,921,400 shares) of the outstanding Lyondell Common Stock. Five of
the eleven directors of Lyondell are officers of ARCO. In addition, ARCO and
Lyondell have entered into various intercompany transactions and arrangements.
See "Relationship with ARCO" in the Lyondell prospectus attached hereto as
Appendix A.
 
  Lyondell is operated and managed as a corporation independent from ARCO. ARCO
has agreed, during the period the Exchangeable Notes are outstanding, to limit
certain of its rights as a stockholder of Lyondell, including its rights to
call a special meeting of stockholders, to take action by written consent, to
solicit proxies in respect of the election of directors or certain other
matters, and to initiate or solicit proposals by a single entity or group of
affiliated entities to acquire all or substantially all of the Lyondell Common
Stock or otherwise to acquire Lyondell. Following consummation of the offering,
ARCO currently intends, but is not committed by any agreement or otherwise, to
vote its shares of Lyondell Common Stock proportionately to the votes cast by
the non-ARCO stockholders, including with respect to the election of directors;
provided, that in the event (i) a person or group of persons other than ARCO
are deemed to own more than 10 percent of the Lyondell Common Stock within the
meaning of Section 13(d) of the Securities and Exchange Act of 1934 (the
"Exchange Act"), and (ii) there occurs a contested proxy solicitation within
the meaning of Rule 14a-11(a) of the Exchange Act, ARCO intends to vote its
shares in the manner it deems appropriate. Also following consummation of the
offering, ARCO intends to cause the ARCO officers who currently serve on
Lyondell's Board of Directors to resign; however, ARCO will retain the right to
nominate and vote for candidates for Lyondell's Board of Directors.
 
  ARCO is not required to retain its present holdings of shares of Lyondell
Common Stock pursuant to the terms of the Exchangeable Notes or otherwise. ARCO
and Lyondell are entering into a Registration Rights Agreement (the
"Registration Rights Agreement") pursuant to which Lyondell is registering on
Form S-3 (the "Lyondell S-3") the Lyondell Common Stock deliverable, at ARCO's
option, upon maturity of the Exchangeable Notes. ARCO will pay all of
Lyondell's costs and expenses in respect of the Lyondell S-3. In addition,
Lyondell will grant ARCO certain further registration rights. ARCO remains free
to sell all or any portion of its Lyondell Common Stock in a public or private
offering intended to result in widespread distribution or pursuant to a tender
or exchange offer; subject to the foregoing, ARCO has also agreed, during the
period the Exchangeable Notes are outstanding, and continuing for a period of
one year thereafter, not to sell all or any portion of its Lyondell Common
Stock to a single entity or group of affiliated entities in a private
transaction without the approval of Lyondell's Board of Directors.
 
  Moreover, because ARCO is not required to retain its Lyondell Common Stock
and because of all of the agreements described in the preceding three
paragraphs, there can be no assurance that ARCO will have any influence over
the actions and decisions taken and made by Lyondell.
 
  Lyondell has no obligations with respect to the Exchangeable Notes or amounts
to be paid to holders thereof, including any obligation to take the needs of
ARCO or of holders of the Exchangeable Notes into consideration for any reason.
Lyondell will not receive any of the proceeds of the offering of the
Exchangeable Notes made hereby and is not responsible for the determination of
the timing of, prices for or quantities of the Exchangeable Notes to be issued
or the determination or calculation of the amount to be paid upon mandatory
exchange at Maturity.
 
                                       8
<PAGE>
 
                           CAPITALIZATION (UNAUDITED)
 
  The following table sets forth the capitalization of ARCO and its
consolidated subsidiaries as of March 31, 1994, and as adjusted for the
Exchangeable Notes offered hereby.
 
<TABLE>
<CAPTION>
                                                            ACTUAL   AS ADJUSTED
                                                            -------  -----------
                                                               (MILLIONS OF
                                                                 DOLLARS)
   <S>                                                      <C>      <C>
   Obligations due within one year:
     Notes payable......................................... $ 1,729    $ 1,729
     Long-term debt due within one year....................     159        159
                                                            -------    -------
                                                              1,888      1,888
   Long-term debt:
     Debentures, notes and other...........................   7,008      7,008
     9% Exchangeable Notes offered hereby..................     --         866
                                                            -------    -------
       Total notes payable and debt........................   8,896      9,762
   Stockholders' equity:
     Preference stocks.....................................       1          1
     Common stock..........................................     402        402
     Capital in excess of par value of stock...............     656        656
     Retained earnings.....................................   5,236      5,236
     Pension liability adjustment..........................     (29)       (29)
     Treasury stock, at cost...............................     (47)       (47)
     Foreign currency translation..........................    (116)      (116)
                                                            -------    -------
       Total stockholders' equity..........................   6,103      6,103
                                                            -------    -------
       Total capitalization................................ $14,999    $15,865
                                                            =======    =======
</TABLE>
 
  At March 31, 1994, ARCO and its consolidated subsidiaries had outstanding
notes payable due within one year aggregating approximately $1.7 billion and
cash, cash equivalents and short-term investments aggregating approximately
$3.6 billion.
 
  Notes, debentures and other long-term debt are stated at their principal
amount, except for issues sold at a substantial discount, which are included
net of unamortized original issue discount.
 
                                       9
<PAGE>
 
                            SELECTED FINANCIAL DATA
 
  The following table sets forth selected financial information for ARCO:
 
<TABLE>
<CAPTION>
                            THREE MONTHS
                          ENDED MARCH 31,         YEARS ENDED DECEMBER 31,
                          ---------------- ---------------------------------------
                           1994     1993   1993(1) 1992(2) 1991(3)  1990   1989(4)
                          ------- -------- ------- ------- ------- ------- -------
                                            (MILLIONS OF DOLLARS EXCEPT PER SHARE
                            (UNAUDITED)                   AMOUNTS)
<S>                       <C>     <C>      <C>     <C>     <C>     <C>     <C>
Sales and other
 operating revenues
 (including excise
 taxes).................  $ 3,800 $  4,507 $18,487 $18,668 $18,191 $18,836 $16,049
Income before changes in
 accounting principles..  $   149 $    260 $   269 $ 1,193 $   709 $ 1,688 $ 1,953
Net income..............  $   149 $    260 $   269 $   801 $   709 $ 2,011 $ 1,953
Earned per share before
 changes in accounting
 principles.............  $   .92 $   1.60 $  1.66 $  7.39 $  4.39 $ 10.20 $ 11.26
Earned per share........  $   .92 $   1.60 $  1.66 $  4.96 $  4.39 $ 12.15 $ 11.26
Cash dividends per com-
 mon share..............  $ 1.375 $  1.375 $  5.50 $  5.50 $  5.50 $  5.00 $  4.50
Total assets............  $23,818 $ 23,903 $23,894 $24,256 $24,492 $23,864 $22,261
Long-term debt and capi-
 tal lease obligations..  $ 7,008 $  6,216 $ 7,089 $ 6,227 $ 5,989 $ 5,997 $ 5,313
</TABLE>
- --------
(1) In 1993, ARCO provided as unusual items a pretax charge of $659 million,
    $404 million after tax, associated with an announced reorganization of its
    Lower 48 oil and gas operations.
 
(2) In 1992, ARCO recognized a pretax benefit of $149 million from a settlement
    with Iran and a pretax benefit of $178 million related to a portion of the
    gain from the 1989 sale of a majority interest in Lyondell. ARCO also
    recognized a pretax charge of $56 million resulting from ARCO Chemical's
    withdrawal from a joint venture in Korea. The net benefit related to 1992
    unusual items was $211 million after tax.
 
(3) In 1991, ARCO provided as unusual items an estimated pretax charge of $281
    million associated with a reorganization of its Lower 48 oil and gas
    operations and a company-wide workforce reduction. ARCO also provided as
    unusual items a pretax charge of approximately $222 million for the
    anticipated loss on the sale of certain Lower 48 oil and gas properties and
    the writedown of certain coal assets. The net provision related to 1991
    unusual items was $312 million after tax.
 
(4) Includes after-tax gain of $634 million from the sale of a majority
    interest in Lyondell.
 
  ARCO's financial statements for the year ended December 31, 1993 are
contained in its Annual Report on Form 10-K for such period, incorporated
herein by reference.
 
  ARCO cautions against projecting any future results based on present earnings
levels because of, among other things, economic uncertainties and the impact of
potential government actions.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
  The following table sets forth the ratio of earnings to fixed charges for
ARCO for the three months ended March 31, 1994 and for the five years ended
December 31, 1993:
 
<TABLE>
<CAPTION>
           MARCH 31, 1994       1993         1992         1991         1990         1989
           --------------       ----         ----         ----         ----         ----
           <S>                  <C>          <C>          <C>          <C>          <C>
                2.17            1.69         2.89         2.00         3.71         4.13
</TABLE>
 
 
                                       10
<PAGE>
 
               PRICE RANGE OF LYONDELL COMMON STOCK AND DIVIDENDS
   
  The Lyondell Common Stock has been traded on the NYSE since January 18, 1989.
The following table sets forth, for the indicated calendar periods, the
reported high and low sales prices of the Lyondell Common Stock on the NYSE
Composite Tape and the cash dividends per share of Lyondell Common Stock. As of
August 1, 1994, there were approximately 3,000 record holders of the Lyondell
Common Stock, including The Depository Trust Company which holds shares of
Lyondell Common Stock on behalf of an indeterminate number of beneficial
owners.     
 
<TABLE>
<CAPTION>
                                                                       DIVIDENDS
                          PERIOD                        HIGH     LOW   PER SHARE
                          ------                       ------- ------- ---------
     <S>                                               <C>     <C>     <C>
     1992
       First Quarter.................................. $25 3/4 $22 1/8  $0.45
       Second Quarter.................................  25 7/8  21 1/8   0.45
       Third Quarter..................................  25 5/8  21 3/8   0.45
       Fourth Quarter.................................  25 1/2  23 1/8   0.45
     1993
       First Quarter..................................  29 1/2  23 3/4   0.45
       Second Quarter.................................  26 5/8    19     0.225*
       Third Quarter..................................  21 5/8  16 3/4   0.225
       Fourth Quarter.................................  21 1/2  18 3/8   0.225
     1994
       First Quarter..................................  23 7/8  20 5/8   0.225
       Second Quarter.................................  26 7/8  21 1/4   0.225**
       Third Quarter (through August 1)...............  25 3/4    24
</TABLE>
- --------
 * On July 23, 1993, Lyondell's Board of Directors decreased the amount of the
   regular quarterly dividend from $0.45 to $0.225 per share.
 
** On July 22, 1994, Lyondell's Board of Directors declared a regular quarterly
   dividend in the amount of $0.225 per share payable on September 15, 1994 to
   stockholders of record on August 12, 1994.
 
  For a recent sale price of the Lyondell Common Stock, see the cover page of
this Prospectus. See also "Price Range of Common Stock and Dividends" in the
Lyondell Prospectus attached hereto as Appendix A.
 
  ARCO makes no representation as to the amount of dividends, if any, that
Lyondell will pay in the future. In any event, holders of the Exchangeable
Notes will not be entitled to receive any dividends that may be payable on the
Lyondell Common Stock until such time as ARCO, if it so elects, delivers
Lyondell Common Stock at Maturity of the Exchangeable Notes. See "Description
of the Exchangeable Notes."
 
                     DESCRIPTION OF THE EXCHANGEABLE NOTES
 
  The Exchangeable Notes are one series of Debt Securities (as defined below)
to be issued under an indenture dated as of January 1, 1992, between ARCO and
The Bank of New York, as trustee, as supplemented by a First Supplemental
Indenture dated as of May 1, 1994, between ARCO and The Bank of New York, as
trustee (the "Trustee") (as supplemented from time to time, the "Indenture").
All references herein to "Debt Securities" shall refer to debt securities
issued under the Indenture. The following summary of certain provisions of the
Indenture does not purport to be complete and is qualified in its entirety by
reference to the Indenture, a copy of which is filed as an exhibit to the
Registration Statement of which this Prospectus is a part. All article and
section references appearing herein are to articles and sections of the
Indenture, and all capitalized terms have the meanings specified in the
Indenture.
 
 
                                       11
<PAGE>
 
GENERAL
   
  The Exchangeable Notes will be unsecured and will rank on a parity with all
other unsecured and unsubordinated indebtedness of ARCO. The Indenture does not
limit the amount of Debt Securities which may be issued thereunder. (Section
2.01) The aggregate number of Exchangeable Notes to be issued will be
35,000,000, plus such additional number of Exchangeable Notes as may be issued
pursuant to the over-allotment option granted by ARCO to the Underwriters (see
"Plan of Distribution"). The Exchangeable Notes will mature on September 15,
1997.     
   
  Each Exchangeable Note, which will be issued with a principal amount of
$24.75, will bear interest at the annual rate of 9% of the principal amount per
annum (or $2.2275 per annum) from August 8, 1994, or from the most recent
Interest Payment Date to which interest has been paid or provided for until the
principal amount thereof exchanged at Maturity pursuant to the terms of the
Exchangeable Notes. Interest on the Exchangeable Notes will be payable
quarterly in arrears on March 15, June 15, September 15 and December 15,
commencing September 15, 1994 (each, an "Interest Payment Date"), to the
persons in whose names the Exchangeable Notes are registered at the close of
business on the twenty-fifth day of the calendar month immediately preceding
such Interest Payment Date; provided, that the record date for the September
15, 1994 Interest Payment Date will be August 12, 1994. Interest on the
Exchangeable Notes will be computed on the basis of a 360-day year of twelve
30-day months. If an Interest Payment Date falls on a day that is not a
Business Day, the interest payment to be made on such Interest Payment Date
will be made on the next succeeding Business Day with the same force and effect
as if made on such Interest Payment Date, and no additional interest will
accrue as a result of such delayed payment.     
   
  At Maturity, the principal amount of each Exchangeable Note will be
mandatorily exchanged by ARCO into a number of shares of Lyondell Common Stock
at the Exchange Rate (as defined below) or, at ARCO's option, cash with an
equal value. Accordingly, holders of the Exchangeable Notes will not
necessarily receive an amount equal to the principal amount thereof. The
"Exchange Rate" is equal to, subject to adjustment as a result of certain
dilution events (see "Dilution Adjustments" below), (a) if the Maturity Price
(as defined below) per share of Lyondell Common Stock is greater than or equal
to $27.72 per share of Lyondell Common Stock (the "Threshold Appreciation
Price"), .8929 shares of Lyondell Common Stock per Exchangeable Note, (b) if
the Maturity Price is less than the Threshold Appreciation Price but is greater
than the Initial Price, a fractional share of Lyondell Common Stock per
Exchangeable Note so that the value thereof (determined at the Maturity Price)
is equal to the Initial Price and (c) if the Maturity Price is less than or
equal to the Initial Price, one share of Lyondell Common Stock per Exchangeable
Note. No fractional shares of Lyondell Common Stock will be issued at Maturity
as provided under "Fractional Shares" below. Notwithstanding the foregoing,
ARCO may, at its option in lieu of delivering shares of Lyondell Common Stock,
deliver cash in an amount equal to the value of such number of shares of
Lyondell Common Stock at the Maturity Price. On or prior to August 1, 1997,
ARCO will notify the Trustee and The Depository Trust Company and publish a
notice in a daily newspaper of national circulation stating whether the
principal amount of each Exchangeable Notes will be exchanged for shares of
Lyondell Common Stock or cash. If ARCO elects to deliver shares of Lyondell
Common Stock, holders of the Exchangeable Notes will be responsible for the
payment of any and all brokerage costs upon the subsequent sale of such stock.
(Section 16.01)     
 
  The "Maturity Price" is defined as the average Closing Price per share of
Lyondell Common Stock on the 20 Trading Days immediately prior to Maturity. The
"Closing Price" of any security on any date of determination means the closing
sale price (or, if no closing price is reported, the last reported sale price)
of such security on the NYSE on such date or, if such security is not listed
for trading on the NYSE on any such date, as reported in the composite
transactions for the principal United States securities exchange on which such
security is so listed, or if such security is not so listed on a United States
national or regional securities exchange, as reported by the National
Association of Securities Dealers, Inc. Automated Quotation System, or, if such
security is not so reported, the last quoted bid
 
                                       12
<PAGE>
 
price for such security in the over-the-counter market as reported by the
National Quotation Bureau or similar organization, or, if such bid price is not
available, the market value of such security on such date as determined by a
nationally recognized independent investment banking firm retained for this
purpose by ARCO. A "Trading Day" is defined as a Business Day on which the
security the Closing Price of which is being determined (A) is not suspended
from trading on any national or regional securities exchange or association or
over-the-counter market at the close of business and (B) has traded at least
once on the national or regional securities exchange or association or over-
the-counter market that is the primary market for the trading of such security.
"Business Day" means any day that is not a Saturday, a Sunday or a day on which
the NYSE, banking institutions or trust companies in The City of New York are
authorized or obligated by law or executive order to close.
   
  For illustrative purposes only, the following chart shows the number of
shares of Lyondell Common Stock or the amount of cash that a holder of
Exchangeable Notes would receive for each Exchangeable Note at various Maturity
Prices. The table assumes that there will be no adjustments to the Exchange
Rate described under "Dilution Adjustments" below. There can be no assurance
that the Maturity Price will be within the range set forth below. Given the
Issue Price of $24.75 per Exchangeable Note and the Threshold Appreciation
Price of $27.72, holders of Exchangeable Notes would receive at Maturity the
following number of shares of Lyondell Common Stock or amount of cash (if ARCO
elects to pay the Exchangeable Notes in cash):     
 
<TABLE>
<CAPTION>
      MATURITY PRICE       NUMBER OF
       OF LYONDELL     SHARES OF LYONDELL
       COMMON STOCK       COMMON STOCK    AMOUNT OF CASH
      --------------   ------------------ --------------
      <S>              <C>                <C>
           $22.00            1.0000           $22.00
           $24.75            1.0000           $24.75
           $26.25            0.9429           $24.75
           $27.72            0.8929           $24.75
           $29.00            0.8929           $25.89
</TABLE>
   
  Interest on the Exchangeable Notes will be payable, and delivery of Lyondell
Common Stock (or, at the option of ARCO, its cash equivalent) in exchange for
the Exchangeable Notes at Maturity will be made upon surrender of such
Exchangeable Notes, at the office or agency of ARCO maintained for such
purposes in the city where the principal corporate trust office of the Trustee
is located, which will initially be the principal corporate trust office of the
Trustee, provided that payment of interest may be made (subject to collection)
at the option of ARCO by check mailed to the persons in whose names the
Exchangeable Notes are registered at the close of business on February 25, May
25, August 25 and November 25; provided that the record date for the September
15, 1994 Interest Payment Date will be August 12, 1994. The principal corporate
trust office of the Trustee at the date hereof is 101 Barclay Street, New York,
New York 10286.     
 
  The Exchangeable Notes will be transferable at any time or from time to time.
No service charge will be made to the Holder for any such transfer except for
any tax or governmental charge incidental thereto.
 
  The Indenture does not contain any restriction on the ability of ARCO to
sell, pledge or otherwise convey all or any portion of the Lyondell Common
Stock held by it, and no such shares of Lyondell Common Stock will be pledged
or otherwise held in escrow for use at Maturity of the Exchangeable Notes.
Consequently, in the event of a bankruptcy, insolvency or liquidation of ARCO,
the Lyondell Common Stock, if any, owned by ARCO will be subject to the claims
of the creditors of ARCO. In addition, as described herein, ARCO will have the
option, exercisable in its sole discretion, to satisfy its obligations pursuant
to the mandatory exchange for the principal amount of each Exchangeable Note at
Maturity by delivering to holders of the Exchangeable Notes either the
specified number of shares of Lyondell Common Stock or cash in an amount equal
to the value of such number of shares at the Maturity Price. In the event of
such a sale, pledge or conveyance, a holder of the Exchangeable Notes
 
                                       13
<PAGE>
 
may be more likely to receive cash in lieu of Lyondell Common Stock. As a
result, there can be no assurance that ARCO will elect at Maturity to deliver
Lyondell Common Stock or, if it so elects, that it will use all or any portion
of its current holdings of Lyondell Common Stock to make such delivery.
Consequently, holders of the Exchangeable Notes will not be entitled to any
rights with respect to the Lyondell Common Stock (including without limitation
voting rights and rights to receive any dividends or other distributions in
respect thereof) until such time, if any, as ARCO shall have delivered shares
of Lyondell Common Stock to holders of the Exchangeable Notes at Maturity
thereof.
 
DILUTION ADJUSTMENTS
 
  The Exchange Rate is subject to adjustment if Lyondell shall (i) pay a stock
dividend or make a distribution with respect to Lyondell Common Stock in shares
of such stock, (ii) subdivide or split its outstanding shares of Lyondell
Common Stock, (iii) combine its outstanding shares of Lyondell Common Stock
into a smaller number of shares, (iv) issue by reclassification of its shares
of Lyondell Common Stock any shares of common stock of Lyondell, (v) issue
rights or warrants to all holders of Lyondell Common Stock entitling them to
subscribe for or purchase shares of Lyondell Common Stock at a price per share
less than the market price of the Lyondell Common Stock (other than rights to
purchase Lyondell Common Stock pursuant to a plan for the reinvestment of
dividends or interest) or (vi) pay a dividend or make a distribution to all
holders of Lyondell Common Stock of evidences of its indebtedness or other
assets (excluding any dividends or distributions referred to in clause (i)
above or any cash dividends other than any Extraordinary Cash Dividends) or
issue to all holders of Lyondell Common Stock rights or warrants to subscribe
for or purchase any of its securities (other than those referred to in clause
(v) above). An "Extraordinary Cash Dividend" means, with respect to any one-
year period, all cash dividends on the Lyondell Common Stock during such period
to the extent such dividends exceed on a per share basis 10% of the average
price of the Lyondell Common Stock over such period (less any such dividends
for which a prior adjustment to the Exchange Rate was previously made). All
adjustments to the Exchange Rate will be calculated to the nearest 1/10,000th
of a share of Lyondell Common Stock (or if there is not a nearest 1/10,000th of
a share to the next lower 1/10,000th of a share). No adjustment in the Exchange
Rate shall be required unless such adjustment would require an increase or
decrease of at least one percent therein; provided, however, that any
adjustments which by reason of the foregoing are not required to be made shall
be carried forward and taken into account in any subsequent adjustment.
   
  In the event of (A) any consolidation or merger of Lyondell, or any surviving
entity or subsequent surviving entity of Lyondell (a "Lyondell Successor"),
with or into another entity (other than a merger or consolidation in which
Lyondell is the continuing corporation and in which the Lyondell Common Stock
outstanding immediately prior to the merger or consolidation is not exchanged
for cash, securities or other property of Lyondell or another corporation), (B)
any sale, transfer, lease or conveyance to another corporation of the property
of Lyondell or any Lyondell Successor as an entirety or substantially as an
entirety, (C) any statutory exchange of securities of Lyondell or any Lyondell
Successor with another corporation (other than in connection with a merger or
acquisition) or (D) any liquidation, dissolution or winding up of Lyondell or
any Lyondell Successor (any such event, a "Reorganization Event"), the Exchange
Rate used to determine the amount payable upon exchange at Maturity for each
Exchangeable Note will be adjusted to provide that each holder of Exchangeable
Notes will receive at Maturity cash in an amount equal to (a) if the
Transaction Value (as defined below) is greater than or equal to the Threshold
Appreciation Price, .8929 multiplied by the Transaction Value, (b) if the
Transaction Value is less than the Threshold Appreciation Price but greater
than the Initial Price, the Initial Price and (c) if the Transaction Value is
less than or equal to the Initial Price, the Transaction Value. "Transaction
Value" means (i) for any cash received in any such Reorganization Event, the
amount of cash received per share of Lyondell Common Stock, (ii) for any
property other than cash or securities received in any such Reorganization
Event, an amount equal to the market value at Maturity of such property
received per share of Lyondell Common Stock as determined by a nationally
recognized independent investment banking firm retained for this purpose by
ARCO and (iii) for any     
 
                                       14
<PAGE>
 
securities received in any such Reorganization Event, an amount equal to the
average Closing Price per share of such securities on the 20 Trading Days
immediately prior to Maturity multiplied by the number of such securities
received for each share of Lyondell Common Stock.
 
  Notwithstanding the foregoing, in lieu of delivering cash as provided above,
ARCO may at its option deliver an equivalent value of securities or other
property received in such Reorganization Event, determined in accordance with
clause (ii) or (iii) above, as applicable. If ARCO elects to deliver securities
or other property, holders of the Exchangeable Notes will be responsible for
the payment of any and all brokerage and other transaction costs upon the sale
of such securities or other property. The kind and amount of securities into
which the Exchangeable Notes shall be exchangeable after consummation of such
transaction shall be subject to adjustment as described in the immediately
preceding paragraph following the date of consummation of such transaction.
 
  ARCO is required, within ten Business Days following the occurrence of an
event that requires an adjustment to the Exchange Rate (or if ARCO is not aware
of such occurrence, as soon as practicable after becoming so aware), to provide
written notice to the Trustee of the occurrence of such event and a statement
in reasonable detail setting forth the method by which the adjustment to the
Exchange Rate was determined and setting forth the revised Exchange Rate.
(Section 16.03)
 
FRACTIONAL SHARES
 
  No fractional shares of Lyondell Common Stock will be issued if ARCO
exchanges the Exchangeable Notes for shares of Lyondell Common Stock. In lieu
of any fractional share otherwise issuable in respect of all Exchangeable Notes
of any holder which are exchanged at Maturity, such holder shall be entitled to
receive an amount in cash equal to the value of such fractional share at the
Maturity Price. (Section 16.02)
 
REDEMPTION
 
  The Exchangeable Notes are not subject to redemption prior to Maturity.
 
TRUSTEE
 
  The Trustee for the Exchangeable Notes is The Bank of New York under the
Indenture dated as of January 1, 1992 between ARCO and The Bank of New York, as
amended by the First Supplemental Indenture dated as of May 1, 1994.
       
       
       
       
       
       
LIMITATION ON LIENS
 
  ARCO agrees that neither it nor any Restricted Subsidiary will issue, assume
or guarantee any notes, bonds, debentures or other similar evidences of
indebtedness for money borrowed ("Debt") secured by a mortgage, lien, pledge or
other encumbrance ("Mortgages") upon any Restricted Property without
effectively providing that the Debt Securities (together with, if ARCO so
determines, any other indebtedness or obligation then existing or thereafter
created ranking equally with the Debt Securities) shall be secured equally and
ratably with (or prior to) such Debt so long as such Debt shall be so secured,
except that this restriction will not apply to: (a) Mortgages affecting
property of a corporation existing at the time it becomes a Subsidiary or at
the time it is merged into or consolidated with ARCO or a Subsidiary; (b)
Mortgages on property existing at the time of acquisition thereof or incurred
to secure payment of the purchase price thereof or to secure Debt incurred
prior to, at the time of, or within 24 months after the acquisition for the
purpose of financing all or part of the purchase price; (c) Mortgages on
property to secure all or part of the cost of exploration, drilling or
development thereof or the cost of improvement of property which, in the
opinion of the Board of Directors, is substantially unimproved for the use
intended by ARCO or to secure Debt incurred to provide funds for any such
 
                                       15
<PAGE>
 
purpose; (d) Mortgages which secure only indebtedness owing by a Subsidiary to
ARCO or to a Subsidiary; (e) certain Mortgages to government entities,
including pollution control or industrial revenue bond financing; and (f) any
extension, renewal or replacement of any Mortgage referred to in the foregoing
clauses (a) through (e). Notwithstanding the foregoing, ARCO and any one or
more Restricted Subsidiaries may, without securing the Debt Securities, issue,
assume or guarantee Debt which would otherwise be subject to the foregoing
restrictions in an aggregate principal amount which, together with all other
such Debt of ARCO and its Restricted Subsidiaries and the aggregate Value of
Sale and Lease-Back Transactions (other than those in connection with which
ARCO has voluntarily retired Funded Debt) does not at any one time exceed 10%
of Consolidated Net Tangible Assets of ARCO and its consolidated Subsidiaries.
The following types of transactions shall not be deemed to create Debt secured
by Mortgage: (1) the sale or other transfer of oil, gas or other minerals in
place for a period of time until, or in an amount such that, the transferee
will realize therefrom a specified amount (however determined) of money or such
minerals, or the sale or other transfer of any other interest in property of
the character commonly referred to as a production payment; and (2) Mortgages
required by any contract or statute in order to permit ARCO or a Subsidiary to
perform any contract or subcontract made by it with or at the request of the
United States, any State or any department, agency or instrumentality of
either. (Sections 5.03 and 5.04)
 
  The term Restricted Property means any of ARCO's or a Subsidiary's oil or gas
producing properties or refining or manufacturing plants (other than such
determined by the Board of Directors not to be a principal plant) located in
the continental United States, and any shares of capital stock or indebtedness
of a Restricted Subsidiary. The term Restricted Subsidiary means any Subsidiary
which owns Restricted Property unless substantially all such Subsidiary's
physical properties are located outside the continental United States. The term
Subsidiary will be defined to mean any corporation at least a majority of the
outstanding securities of which having ordinary voting power to elect a
majority of the board of directors of such corporation is at the time owned or
controlled directly or indirectly by ARCO or one or more Subsidiaries. The term
Consolidated Net Tangible Assets means the total amount of assets (less
applicable reserves and other properly deductible items) after deducting
therefrom (i) all current liabilities (excluding any thereof which are by their
terms extendible or renewable at the option of the obligor thereon to a time
more than 12 months after the time as of which the amount thereof is being
computed), and (ii) all goodwill, trade names, trademarks, patents, unamortized
debt discount and expense and other like intangible assets, all as set forth on
the most recent balance sheet of ARCO and its consolidated Subsidiaries and
computed in accordance with generally accepted accounting principles. (Article
One)
 
  ARCO agrees that, if, upon any consolidation or merger of ARCO with or into
any other corporation, or upon any sale or conveyance of all or substantially
all of its property to any other corporation, any of the property of ARCO or of
any Restricted Subsidiary would thereupon become subject to any mortgage, lien
or pledge, ARCO will first secure the Debt Securities equally and ratably with
any other obligations of ARCO or any Restricted Subsidiary then entitled
thereto, by a direct lien on all such property prior to all liens other than
any theretofore existing thereon. (Section 12.02)
 
LIMITATION ON SALE AND LEASE-BACK
 
  ARCO agrees that neither it nor any Restricted Subsidiary will enter into any
Sale and Lease-Back Transaction with respect to any Restricted Property with
any person (other than ARCO or a Subsidiary) unless either (a) ARCO or such
Restricted Subsidiary would be entitled, pursuant to the above provisions, to
incur Debt in a principal amount equal to or exceeding the Value of such Sale
and Lease-Back Transaction secured by a Mortgage on the property to be leased
without equally and ratably securing the Debt Securities, or (b) ARCO during or
immediately after the expiration of four months after the effective date of
such transaction applies to the voluntary retirement of its Funded Debt an
 
                                       16
<PAGE>
 
amount equal to the greater of: (1) the net proceeds of the sale of the
property leased in such transaction or (2) the fair value in the opinion of the
Board of Directors of the leased property at the time such transaction was
entered into (subject to credits for certain voluntary retirements of Funded
Debt, including the Debt Securities). (Sections 5.04 and 5.05)
 
MODIFICATION OF THE INDENTURE
 
  The Indenture contains provisions permitting ARCO and the Trustee, with the
consent of the Holders of not less than 50% in principal amount of the Debt
Securities of each series affected by the modification or amendment at the time
outstanding, to modify the Indenture or any supplemental indenture or the
rights of the Holders of the Debt Securities; provided that no such
modification shall (a) extend the fixed maturity of any Debt Security, or
reduce the rate or extend the time of payment of interest thereon, or reduce
the principal amount thereof, or change the method of computing the amount of
principal thereof at any date, or change the currency in which the Debt
Security is payable, without the consent of the Holder of each Debt Security so
affected, or (b) reduce the aforesaid percentage of Debt Securities, the
consent of the Holders of which is required for any such modification, without
the consent of the Holders of all outstanding Debt Securities of such series so
affected. (Section 11.02)
 
EVENTS OF DEFAULT
 
  The Indenture defines an Event of Default with respect to a particular series
of Debt Securities as being any one of the following events and such other
event as may be established for the Debt Securities of such series: (a) default
for 30 days in any payment of interest on such series; (b) default in any
payment of principal, and premium, if any, on such series when due; (c) default
for 30 days in the payment of any sinking fund installment when due; (d)
default for 90 days after appropriate notice in performance of any other
covenant in the Indenture applicable to that series; or (e) certain events in
bankruptcy, insolvency or reorganization. No Event of Default with respect to a
particular series of Debt Securities issued under the Indenture necessarily
constitutes an Event of Default with respect to any other series of Debt
Securities issued thereunder. In case an Event of Default shall occur and be
continuing with respect to a particular series of Debt Securities, the Trustee
or the Holders of not less than 25% in aggregate principal amount of the Debt
Securities then outstanding of the series (or, in the case of defaults under
(d) or (e), of the Debt Securities of all series) may declare the principal or,
in the case of discounted Debt Securities, the amount specified in the terms
thereof, of such series (or of all outstanding Debt Securities, as the case may
be) to be due and payable. Any Event of Default with respect to a particular
series of Debt Securities may be waived by the Holders of a majority in
aggregate principal amount of the outstanding Debt Securities of such series
(or of the outstanding Debt Securities of all series, in the case of defaults
under (d) or (e)), except in each case a failure to pay principal, or premium,
if any, or interest on such Debt Security. (Section 7.01)
 
  The Indenture requires ARCO to file annually with the Trustee an Officers'
Certificate as to the absence of certain defaults under the terms of the
Indenture. (Section 5.08) The Indenture provides that the Trustee may withhold
notice to the Holders of the Debt Securities of any default (except in payment
of principal, or premium, if any, or interest) if it considers it in the
interest of the Holders of the Debt Securities to do so. (Section 7.08)
 
  Subject to the provisions of the Indenture relating to the duties of the
Trustee in case an Event of Default shall occur and be continuing, the
Indenture provides that the Trustee shall be under no obligation to exercise
any of its rights or powers under the Indenture at the request, order or
direction of the Holders of the Debt Securities unless such Holders shall have
offered to the Trustee reasonable indemnity. (Sections 7.04, 8.01 and 8.02)
Subject to such provisions for indemnification and certain other rights of the
Trustee, the Indenture provides that the Holders of a majority in principal
amount of the outstanding Debt Securities of the particular series affected
shall have the right to direct the time,
 
                                       17
<PAGE>
 
method and place of conducting any proceeding for any remedy available to the
Trustee or exercising any trust or power conferred on the Trustee. (Sections
7.07 and 8.02)
 
  Other than the restrictions on liens and Sale and Lease-Back Transactions
described above, the Indenture and the Debt Securities do not contain any
covenants or other provisions designed to afford holders of the Debt Securities
protection in the event of a highly leveraged transaction involving ARCO or any
Subsidiary.
 
CONCERNING THE TRUSTEE
 
  The Bank of New York, the Trustee, also acts as trustee under other
indentures of ARCO and extends credit to ARCO and its subsidiaries in the
ordinary course of business.
 
            CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS
 
  The following is a summary of certain United States federal income tax
consequences relating to ownership of the Exchangeable Notes. No information is
provided herein with respect to foreign, state or local tax laws. This summary
is based upon the provisions of the Internal Revenue Code of 1986, as amended
(the "Code") and the regulations, rulings and judicial decisions thereunder as
of the date hereof, and such authorities may be repealed, revoked or modified
so as to result in federal income tax consequences different from those
discussed below.
 
  This summary deals only with holders who are initial holders of the
Exchangeable Notes and who will hold the Exchangeable Notes as capital assets.
It does not address all aspects of United States federal income taxation and
does not deal with tax considerations applicable to investors that may be
subject to special United States federal income tax treatment, such as dealers
in securities or persons holding the Exchangeable Notes as a position in a
"straddle" for United States federal income tax purposes or as part of a
"synthetic security" or other integrated investment.
 
  As used herein, a "United States Holder" of the Exchangeable Notes means a
citizen or resident of the United States, a corporation, partnership or other
entity created or organized under the laws of the United States or any
political subdivision thereof, an estate or trust the income of which is
subject to United States federal income taxation regardless of its source who
is the beneficial owner of the Exchangeable Notes. A "Non-United States Holder"
is a holder who is not a United States Holder. All references to "holders"
(including United States Holders and Non-United States Holders) are to
beneficial owners of the Exchangeable Notes.
 
  No statutory, judicial or administrative authority directly addresses the
characterization of the Exchangeable Notes or instruments similar to the
Exchangeable Notes for United States federal income tax purposes. As a result,
significant aspects of the United States federal income tax consequences of an
investment in the Exchangeable Notes are not certain. No ruling is being
requested from the Internal Revenue Service (the "IRS") with respect to the
Exchangeable Notes and no assurance can be given that the IRS will agree with
the conclusions expressed herein. ACCORDINGLY, PROSPECTIVE INVESTORS (INCLUDING
TAX-EXEMPT INVESTORS) IN THE EXCHANGEABLE NOTES SHOULD CONSULT THEIR OWN TAX
ADVISORS WITH RESPECT TO THE TAX CONSEQUENCES OF ACQUIRING, HOLDING AND
DISPOSING OF THE EXCHANGEABLE NOTES, INCLUDING THE TAX CONSEQUENCES THAT MAY
ARISE UNDER THE LAWS OF ANY FOREIGN, STATE, LOCAL OR OTHER TAXING JURISDICTION.
 
  Pursuant to the terms of the Indenture, ARCO and all holders of the
Exchangeable Notes will be obligated to treat the Exchangeable Notes as a unit
(the "Unit") consisting of (i) a debt obligation ("Note") with a fixed
principal amount unconditionally payable at Maturity equal to the principal
amount
 
                                       18
<PAGE>
 
of the Exchangeable Notes, bearing interest at the stated interest rate on the
Exchangeable Notes, and (ii) a forward purchase contract (the "Purchase
Contract") pursuant to which the holder agrees to use the principal payment due
on the Note to purchase at Maturity the Lyondell Common Stock which the holder
is entitled to receive at that time (subject to the Company's right to deliver
cash in lieu of the Lyondell Common Stock). The Indenture will require each
United States Holder to include currently in income when received or accrued
payments denominated as interest that are made with respect to the Exchangeable
Notes in accordance with such holder's regular method of tax accounting.
 
  Pursuant to the agreement to treat the Exchangeable Notes as a unit, a holder
will be required to allocate the purchase price of the Exchangeable Notes
between the two components of the Unit (the Note and the Purchase Contract) on
the basis of their relative fair market values. The purchase price so allocated
will generally constitute the tax basis for each component. Pursuant to the
terms of the Indenture, ARCO and the holders agree to allocate the entire
purchase price of the Exchangeable Notes to the Note. Upon the sale or other
disposition of Exchangeable Notes, a United States Holder generally will be
required to allocate the amount realized between the two components of the
Exchangeable Notes on the basis of their then relative fair market values. A
United States Holder will recognize gain or loss with respect to each component
equal to the difference between the amount realized on the sale or other
disposition for each such component and the United States Holder's tax basis in
such component. Such gain or loss generally will be long-term capital gain or
loss if the United States Holder has held the Exchangeable Notes for more than
one year at the time of disposition.
 
  The distinction between capital gain or loss and ordinary income or loss is
important for purposes of the limitations on a United States Holder's ability
to offset capital losses against ordinary income. In addition, certain
individuals are subject to tax at a reduced rate on long-term capital gains.
 
  At Maturity, pursuant to the agreement to treat the Exchangeable Notes as a
unit, (i) on the repayment of the Note, a United States Holder will realize
long-term capital gain or loss equal to any difference between its tax basis
and the principal amount of the Note, (ii) if ARCO delivers Lyondell Common
Stock, a United States Holder will realize no additional gain or loss on the
exchange, pursuant to the Purchase Contract, of the principal payment due on
the Note for the Lyondell Common Stock, will have a tax basis in such stock
equal to the amount of the principal payment, and will realize capital gain or
loss upon the sale or disposition of such stock, and (iii) if ARCO pays the
Exchangeable Notes in cash, a United States Holder will have gain or loss
(which might be ordinary income or loss rather than long-term capital gain or
loss) equal to the difference between the principal amount of the Note and the
amount of cash received from ARCO.
 
  Due to the absence of authority as to the proper characterization of the
Exchangeable Notes, no assurance can be given that the IRS will accept or that
a court will uphold the characterization described above. Under alternative tax
characterizations of the Exchangeable Notes, it is possible, for example, that
(i) gain may be treated as ordinary income, instead of capital gain, (ii) a
United States Holder may be taxable upon the receipt of Lyondell Common Stock
with a value in excess of the principal amount of the Note, rather than upon
the sale of such stock, (iii) all or part of the interest income on the Note
may be treated as nontaxable, increasing the gain (or decreasing the loss) at
Maturity or disposition of the Exchangeable Notes (or disposition of the
Lyondell Common Stock) or (iv) the Notes could be considered as issued at a
premium which, if amortized, would reduce the amount of interest income
currently includible in income by a holder and would increase the taxable gain
(or decrease the loss) realized at Maturity or disposition of the Exchangeable
Notes (or disposition of the Lyondell Common Stock).
 
  It is possible that the IRS may contend that the Exchangeable Notes should be
subject to certain proposed Treasury regulations dealing with "contingent
payment" debt instruments (the "Proposed Regulations"). Under the Proposed
Regulations, payments made in respect of the Exchangeable Notes (including the
value of the Lyondell Common Stock received at Maturity) would be treated first
as a
 
                                       19
<PAGE>
 
nontaxable return of the holder's investment in the Exchangeable Notes and
thereafter would be taxable as interest income to the holder.
 
  The IRS has indicated that it is considering withdrawing the Proposed
Regulations, and may replace them with a rule that requires some minimum amount
of interest income to be accrued on all contingent payment debt instruments. It
is impossible to predict whether, or in what manner, the Proposed Regulations
may be modified and whether any modifications would apply to the Exchangeable
Notes. In addition, the IRS has announced that it intends to promulgate
regulations addressing the tax consequences of complex financial instruments
which could affect the tax treatment of the Exchangeable Notes.
 
  The Revenue Reconciliation Act of 1993 added Section 1258 to the Code, which
may require certain holders of the Exchangeable Notes who enter into hedging
transactions or offsetting positions with respect to the Exchangeable Notes to
treat all or a portion of their gain as ordinary income rather than as capital
gain upon the disposition of the Exchangeable Notes. United States Holders
hedging their positions with respect to the Notes should consult their own tax
advisors regarding the applicability of this legislation to an investment in
the Exchangeable Notes.
 
NON-UNITED STATES HOLDERS
 
  Based on the treatment of the Exchangeable Notes described above, in the case
of a Non-United States Holder of the Exchangeable Notes, payments made with
respect to the Exchangeable Notes should not be subject to United States
withholding tax, provided that such holder complies with applicable
certification requirements. Any capital gain realized upon the sale or other
disposition of the Exchangeable Notes by a Non-United States Holder will
generally not be subject to United States federal income tax unless (i) such
gain is effectively connected with a United States trade or business of such
holder; (ii) such gain is treated as effectively connected with a trade or
business in the United States because Lyondell is or has been a "United States
real property holding corporation" for United States federal income tax
purposes and the Non-United States Holder held, directly or indirectly, at any
time during the five-year period ending on the date of disposition, more than
five percent of the Exchangeable Notes (in which case withholding of such tax
may also apply); or (iii) in the case of an individual, such individual is
present in the United States for 183 days or more in the taxable year of the
sale or other disposition or the gain is attributable to a fixed place of
business maintained by such individual in the United States.
 
  As discussed above, alternative characterizations of the Exchangeable Notes
for federal income tax purposes are possible. Should an alternative
characterization cause payments with respect to the Exchangeable Notes to
become subject to withholding tax, ARCO will withhold tax at the statutory
rate. However, until the IRS provides further guidance, no tax will be
withheld. Non-United States Holders should consult their own tax advisors.
 
                                       20
<PAGE>
 
BACKUP WITHHOLDING AND INFORMATION REPORTING
 
  A holder of the Exchangeable Notes may be subject to information reporting
and to backup withholding at a rate of 31 percent of certain amounts paid to
the holder unless such holder provides proof of an applicable exemption or a
correct taxpayer identification number, and otherwise complies with applicable
requirements of the backup withholding rules. Backup withholding is not an
additional tax. Any amounts withheld under the backup withholding rules will
be refunded or credited against such holder's United States federal income tax
liability, provided that required information is furnished to the IRS.
 
                                 UNDERWRITING
 
  Subject to the terms and conditions of the Underwriting Agreement, ARCO has
agreed to sell to each of the U.S. Underwriters named below (the "U.S.
Underwriters"), and each of such U.S. Underwriters, for whom Goldman, Sachs &
Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Salomon Brothers
Inc are acting as representatives, has severally agreed to purchase from ARCO,
the respective number of Exchangeable Notes set forth opposite its name below:
 
<TABLE>
<CAPTION>
                                                                     NUMBER OF
                                                                    EXCHANGEABLE
                               UNDERWRITER                             NOTES
                               -----------                          ------------
      <S>                                                           <C>
      Goldman, Sachs & Co. ........................................   4,950,000
      Merrill Lynch, Pierce, Fenner & Smith
               Incorporated........................................   4,950,000
      Salomon Brothers Inc ........................................   4,950,000
      Advest, Inc. ................................................     375,000
      Robert W. Baird & Co. Incorporated...........................     375,000
      Bear, Stearns & Co. Inc. ....................................     600,000
      Sanford C. Bernstein & Co., Inc. ............................     375,000
      William Blair & Company......................................     375,000
      Alex. Brown & Sons Incorporated..............................     600,000
      The Buckingham Research Group Incorporated...................     275,000
      CS First Boston Corporation..................................     600,000
      Dain Bosworth Incorporated...................................     375,000
      Dean Witter Reynolds Inc. ...................................     600,000
      A. G. Edwards & Sons, Inc. ..................................     600,000
      J.J.B. Hilliard, W.L. Lyons, Inc. ...........................     275,000
      Howard, Weil, Labouisse, Friedrichs Incorporated.............     600,000
      Janney Montgomery Scott Inc..................................     375,000
      Kemper Securities, Inc. .....................................     600,000
      Kidder, Peabody & Co. Incorporated...........................     600,000
      C.J. Lawrence/Deutsche Bank Securities Corporation...........     375,000
      Legg Mason Wood Walker Incorporated..........................     375,000
      Lehman Brothers Inc. ........................................     600,000
      Luther, Smith & Small, Inc. .................................     275,000
      McDonald & Company Securities, Inc. .........................     375,000
      J.P. Morgan Securities Inc. .................................     600,000
      Morgan Stanley & Co. Incorporated............................     600,000
      Oppenheimer & Co., Inc.......................................     600,000
      Parker/Hunter Incorporated...................................     275,000
      Rauscher Pierce Refsnes, Inc. ...............................     375,000
      Scott & Stringfellow, Inc.  .................................     275,000
      Smith Barney Inc.............................................     600,000
      Stifel, Nicolaus & Company, Incorporated.....................     275,000
      Sutro & Co. Incorporated.....................................     375,000
      UBS Securities Inc. .........................................     600,000
      Wertheim Schroder & Co. Incorporated.........................     600,000
      Wheat, First Securities, Inc. ...............................     375,000
                                                                     ----------
        Total......................................................  30,000,000
                                                                     ==========
</TABLE>
 
                                      21
<PAGE>
 
  Under the terms and conditions of the Underwriting Agreement, the U.S.
Underwriters are committed to take and pay for all of the Exchangeable Notes
offered hereby, if any are taken.
   
  The U.S. Underwriters propose to offer the Exchangeable Notes in part
directly to the public at the initial public offering price set forth on the
cover page of the ARCO Prospectus, and in part to certain securities dealers at
such price less a concession of $0.45 per Exchangeable Note. The U.S.
Underwriters may allow, and each of such dealers may reallow, a concession not
exceeding $0.10 per Exchangeable Note to certain dealers and brokers. After the
Exchangeable Notes are released for sale to the public, the offering price and
the other selling terms may from time to time be varied by the representatives.
    
  ARCO has entered into an underwriting agreement (the "International
Underwriting Agreement") with the underwriters of the International Offering
(the "International Underwriters") providing for the concurrent offer and sale
of 5,000,000 shares of Exchangeable Notes in an international offering outside
the United States. The offering price and underwriting discount per
Exchangeable Note for the two offerings are identical. The closing of the
offering made hereby is a condition to the closing of the international
offering, and vice versa. The representatives of the International Underwriters
are Goldman Sachs International, Merrill Lynch International Limited and
Salomon Brothers International Limited.
 
  Pursuant to an Agreement between the U.S. and International Underwriting
Syndicates (the "Agreement Between") relating to the two offerings, each of the
U.S. Underwriters named herein has agreed that, as a part of the distribution
of the Exchangeable Notes offered hereby and subject to certain exceptions, it
will offer, sell or deliver the Exchangeable Notes, directly or indirectly,
only in the United States of America (including the States and the District of
Columbia), its territories, its possessions and other areas subject to its
jurisdiction (the "United States") and to U.S. persons, which term shall mean,
for purposes of this paragraph: (a) any individual who is a resident of the
United States or (b) any corporation, partnership or other entity organized in
or under the laws of the United States or any political subdivision thereof and
whose office most directly involved with the purchase is located in the United
States. Each of the International Underwriters has agreed pursuant to the
Agreement Between that, as a part of the distribution of the Exchangeable Notes
offered as a part of the International Offering, and subject to certain
exceptions, it will (i) not, directly or indirectly, offer, sell or deliver any
Exchangeable Notes (a) in the United States or to any U.S. persons or (b) to
any person whom it believes intends to reoffer, resell or deliver the
Exchangeable Notes in the United States or to any U.S. persons, and (ii) cause
any dealer to whom it may sell such Exchangeable Notes at any concession to
agree to observe a similar restriction.
 
  Pursuant to the Agreement Between, sales may be made between the U.S.
Underwriters and the International Underwriters of such number of Exchangeable
Notes as may be mutually agreed. The price of any Exchangeable Notes so sold
shall be the initial public offering price, less an amount not greater than the
selling concession.
 
  ARCO has granted the U.S. Underwriters an option exercisable for 30 days
after the date of this Prospectus to purchase up to an aggregate of 4,171,400
additional Exchangeable Notes solely to cover over-allotments, if any. If the
U.S. Underwriters exercise their over-allotment option, the U.S. Underwriters
have severally agreed, subject to certain conditions, to purchase approximately
the same percentage thereof that the number of Exchangeable Notes to be
purchased by each of them, as shown in the foregoing table, bears to the
30,000,000 Exchangeable Notes offered. The U.S. Underwriters may exercise such
option only to cover over-allotments in connection with the sale of the
30,000,000 Exchangeable Notes offered. ARCO has granted the International
Underwriters an option exercisable for 30 days to purchase up to an aggregate
of 750,000 additional Exchangeable Notes, solely to cover over-allotments, at
the initial public offering price less the underwriting discount, as set forth
on the cover page of the Prospectus.
 
                                       22
<PAGE>
 
  ARCO and Lyondell have agreed that during the period beginning from the date
of the ARCO Prospectus and continuing to and including the date 120 days after
the date of the ARCO Prospectus, subject to certain exceptions set forth in the
Underwriting Agreement and the International Underwriting Agreement, they will
not offer, sell, contract to sell or otherwise dispose of any shares of Common
Stock of Lyondell or securities convertible into Common Stock of Lyondell
without the prior written consent of the representatives.
 
  The representatives have informed ARCO that they do not expect sales to
discretionary accounts by the U.S. Underwriters to exceed five percent of the
total number of Exchangeable Notes offered by them and that sales to
discretionary accounts by the representatives will be less than one percent of
the total number of Exchangeable Notes offered by them.
 
  The Exchangeable Notes will be a new issue of securities with no established
trading market. The representatives have advised ARCO that they intend to make
a market in the Exchangeable Notes but will not be obligated to do so and may
discontinue any market making at any time without notice. No assurance can be
given as to the liquidity of the trading market for the Exchangeable Notes.
 
  ARCO and Lyondell have agreed to indemnify the several Underwriters against
certain liabilities, including liabilities under the Securities Act of 1933.
 
                                    EXPERTS
 
  The consolidated financial statements of ARCO, appearing in ARCO's Annual
Report on Form 10-K for the year ended December 31, 1993, have been audited by
Coopers & Lybrand, independent accountants, as set forth in their report
included therein, and are incorporated by reference herein in reliance upon
such report and upon the authority of such Firm as experts in accounting and
auditing.
 
                                 LEGAL OPINIONS
 
  The legality of the Exchangeable Notes registered hereby has been passed upon
for ARCO by Ronald C. Redcay, Esq., Acting General Counsel of Atlantic
Richfield Company, 515 South Flower Street, Los Angeles, California 90071.
Certain other legal matters related to the Exchangeable Notes offered hereby
will be passed upon for ARCO by Diane A. Ward, Esq., Senior Counsel, Securities
& Finance, of Atlantic Richfield Company, 515 South Flower Street, Los Angeles,
CA 90071. As of July 1, 1994, Mr. Redcay owned 7,646 options to purchase shares
of Common Stock of ARCO and Ms. Ward owned 547 options to purchase shares, and
706 shares of Common Stock of ARCO all held pursuant to ARCO's employee benefit
plans. The legality of the Exchangeable Notes offered hereby will be passed
upon for the Underwriters by Cravath, Swaine & Moore, New York, New York.
Cravath, Swaine & Moore provides legal services to ARCO from time to time and
is currently doing so on certain matters relating to ARCO's investment in
Lyondell.
 
                                       23
<PAGE>
 
                                                                      APPENDIX A
       
       
       
                               35,000,000 SHARES
 
                      LOGO Lyondell Petrochemical Company
 
                                  COMMON STOCK
                          (PAR VALUE $1.00 PER SHARE)
 
                               ----------------
   
  This Prospectus relates to 35,000,000 shares of common stock, par value $1.00
per share (the "Common Stock"), of Lyondell Petrochemical Company (the
"Company"), which may be delivered by Atlantic Richfield Company ("ARCO"), at
its option, pursuant to the terms of the 9% Exchangeable Notes due September
15, 1997 (the "Exchangeable Notes") of ARCO. This Prospectus is Appendix A to
both a U.S. prospectus of ARCO covering the sale of 30,000,000 Exchangeable
Notes and an international prospectus of ARCO covering the sale of 5,000,000
Exchangeable Notes. The Company will not receive any of the proceeds from the
sale of the Exchangeable Notes or the delivery thereunder of shares of Common
Stock covered hereby.     
 
  ARCO has granted the underwriters of the Exchangeable Notes a 30-day option
to purchase up to an additional 4,921,400 Exchangeable Notes, which may be
exchangeable at their maturity for additional shares of Common Stock. Such
option has been granted solely to cover over-allotments, if any.
 
  SEE "CERTAIN INVESTMENT CONSIDERATIONS" FOR A DISCUSSION OF CERTAIN
CONSIDERATIONS RELEVANT TO AN INVESTMENT IN THE COMMON STOCK.
   
  The Common Stock is traded on the New York Stock Exchange, Inc. ("NYSE")
under the symbol "LYO." On August 1, 1994, the last reported sale price of
Common Stock on the NYSE Composite Tape was $24.75 per share. See "Price Range
of Common Stock and Dividends."     
 
                               ----------------
 
THESE  SECURITIES HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE SECURITIES  AND
 EXCHANGE  COMMISSION   OR  ANY  STATE  SECURITIES  COMMISSION  NOR   HAS  THE
  SECURITIES  AND  EXCHANGE COMMISSION  OR  ANY STATE  SECURITIES  COMMISSION
   PASSED   UPON  THE  ACCURACY   OR  ADEQUACY   OF  THIS  PROSPECTUS.   ANY
    REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
                               ----------------
                 
              The date of this Prospectus is August 1, 1994.     
<PAGE>
 
                             AVAILABLE INFORMATION
 
  The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and, in accordance
therewith, files reports, proxy statements and other information with the
Securities and Exchange Commission (the "Commission"). Such reports, proxy
statements and other information filed by the Company with the Commission may
be inspected and copied at the Public Reference Section of the Commission at
450 Fifth Street, N.W., Judiciary Plaza, Washington, D.C. 20549, and at the
following Regional Offices of the Commission: Chicago Regional Office,
Northwestern Atrium Center, 500 West Madison Street, Suite 1400, Chicago,
Illinois 60661-2511; and New York Regional Office, Seven World Trade Center,
New York, New York 10048. Copies of such material may also be obtained from the
Public Reference Section of the Commission at its principal office at 450 Fifth
Street, N.W., Judiciary Plaza, Washington, D.C. 20549, at prescribed rates. The
Company's registration statements, reports, proxy statements and other
information may also be inspected at the offices of the New York Stock
Exchange, 20 Broad Street, New York, New York 10005.
 
  This Prospectus, which constitutes a part of a registration statement on Form
S-3 (the "Registration Statement") filed by the Company with the Commission
under the Securities Act of 1933, as amended (the "Securities Act"), omits
certain of the information set forth in the Registration Statement. Reference
is hereby made to the Registration Statement and to the exhibits thereto for
further information with respect to the Company and the securities offered
hereby. Statements contained herein concerning the provisions of such documents
are necessarily summaries of such documents, and each such statement is
qualified in its entirety by reference to the copy of the applicable document
filed with the Commission. Copies of the Registration Statement and the
exhibits thereto are on file at the offices of the Commission and may be
obtained upon payment of the fee prescribed by the Commission, or may be
examined without charge at the public reference facilities of the Commission
described above.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
  The Company's Annual Report on Form 10-K for the year ended December 31, 1993
("1993 Form 10-K Report"), Quarterly Report on Form 10-Q for the quarter ended
March 31, 1994, Quarterly Report on Form 10-Q for the quarter ended June 30,
1994, Current Report on Form 8-K dated June 6, 1994, Current Report on Form 8-K
dated June 21, 1994, Current Report on Form 8-K dated July 11, 1994 and Proxy
Statement dated April 14, 1994 (as supplemented by Supplement to Proxy
Statement dated June 23, 1994) are incorporated herein by reference.
 
  All documents filed by the Company pursuant to Section 13(a), 13(c), 14 or
15(d) of the Exchange Act subsequent to the date of this Prospectus and prior
to the termination of the offering made hereby shall be deemed to be
incorporated by reference in this Prospectus and to be part hereof from the
date of filing of such documents. Any statement contained herein or in a
document incorporated or deemed to be incorporated herein by reference shall be
deemed to be modified or superseded for purposes of the Registration Statement
and this Prospectus to the extent that a statement contained herein or in any
other subsequently filed incorporated document or in any accompanying
prospectus supplement modifies or supersedes such statement. Any such statement
so modified or superseded shall not be deemed, except as so modified or
superseded, to constitute a part of this Prospectus.
 
  Copies of all documents incorporated herein by reference other than exhibits
to such documents (unless such exhibits are specifically incorporated by
reference) will be provided without charge to each person who receives a copy
of this Prospectus upon request to the Company, 1221 McKinney Street, Suite
1600, Houston, Texas 77002, Attention: Assistant Secretary (telephone: (713)
652-7200).
 
  The Company is incorporated in Delaware, and its executive offices are
located at 1221 McKinney Street, Suite 1600, Houston, Texas 77002 (telephone:
(713) 652-7200).
 
  THE COMPANY HAS BEEN ADVISED THAT IN CONNECTION WITH THE OFFERING OF THE
EXCHANGEABLE NOTES BY ARCO, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE EXCHANGEABLE
NOTES OR THE COMMON STOCK OF THE COMPANY, OR EACH OF THEM, AT A LEVEL ABOVE
THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN MARKET. SUCH TRANSACTIONS MAY BE
EFFECTED ON THE NEW YORK STOCK EXCHANGE, IN THE OVER-THE-COUNTER MARKET OR
OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
 
                                       2
<PAGE>
 
 
                               PROSPECTUS SUMMARY
 
  The following summary is qualified in its entirety by reference to, and
should be read in connection with, the more detailed information and the
consolidated financial statements (including the notes thereto) appearing
elsewhere in this Prospectus as well as the information incorporated herein by
reference. Unless otherwise indicated or required by context, references to
"Lyondell" or the "Company" include its consolidated subsidiaries.
 
COMPANY OVERVIEW
 
  Lyondell Petrochemical Company ("Lyondell" or the "Company") is a leading
manufacturer and marketer of petrochemicals and, through its interest in
LYONDELL-CITGO Refining Company Ltd. ("LCR"), of refined petroleum products.
The Company's corporate headquarters and manufacturing facilities are located
in the Houston, Texas area.
 
  The Company produces a wide variety of petrochemicals, including olefins
(primarily ethylene, propylene and butadiene), polyolefins (low density
polyethylene and polypropylene), methanol, MTBE (methyl tertiary butyl ether)
and aromatics. Lyondell is the largest domestic merchant marketer of ethylene
and propylene, with rated production capacities of 3.6 and 2.1 billion pounds
per year, respectively. Lyondell's petrochemical products are primarily
commodity chemicals that are sold to customers for use in the manufacture of
chemicals, plastics and other synthetic materials. These materials are used, in
turn, to produce a wide variety of consumer goods and industrial products.
 
  The Company's refining business is conducted through its approximate 90
percent interest in LCR, which operates a 265,000 barrels per day refinery (the
"Refinery"). LCR sells the majority of the gasoline, jet fuel and heating oil
it produces to CITGO Petroleum Corporation ("CITGO"), which currently has an
approximate 10 percent interest in LCR. LCR also produces fuel oil and
aromatics, as well as lubricants for the transportation, oil drilling and food
processing industries.
 
LYONDELL'S STRATEGY
 
  Lyondell's management believes that the best means to create value for its
stockholders is to maximize free cash flow over the long term. Lyondell's
strategy is to achieve the lowest possible costs and the highest degree of
operational flexibility in order to capture the benefits of cyclical upturns in
its businesses and to minimize the impact of downturns. The following are the
key elements of the Company's strategy to achieve superior performance
throughout the business cycle:
 
. LOW COSTS AND UNIQUE OPERATING FLEXIBILITY IN PETROCHEMICALS
 
    Management believes that Lyondell's cost to produce ethylene is the
  lowest in the United States and that its olefins plants are the most
  flexible in the industry. In order to enhance the Company's low cost
  position, management strives to quickly identify and capitalize on
  opportunities to use its operating and organizational flexibility,
  including the ability to recover and upgrade by-products and to optimize
  integration of its facilities. Lyondell is the only ethylene producer
  with the flexibility to process from 100 percent petroleum liquids
  feedstocks (including heavy liquids) to 90 percent natural gas liquids
  feedstocks as market conditions change. Lyondell also has a unique
  ability to vary the production ratios of ethylene and propylene in order
  to capture more profitable market opportunities through its product
  flexibility unit, which converts ethylene and other light hydrocarbons
  into propylene. After a doubling of capacity in 1993, this unit is
  designed to produce up to one billion pounds of propylene per year.
 
    High productivity, lean staffing and a participative management style
  also are key to the Company's low operating costs. Industry studies show
  that Lyondell's olefins plants have the highest production per plant-
  level employee in the industry. Lyondell's lean staff levels and
 
                                       3
<PAGE>
 
  minimal expenses have resulted in a five-year average for annual
  selling, general and administrative expenses (which exclude certain
  distribution costs) of 2.4 percent of sales, which management believes
  is among the lowest in the industry.
 
. ENHANCING THE VALUE OF THE REFINING BUSINESS
 
    Management believes the Company has significantly improved the outlook
  for its refining business through a mutually advantageous arrangement
  with CITGO and other affiliates of the Venezuelan national oil company,
  Petroleos de Venezuela, S.A. ("PDVSA"), entered into in 1993.
 
    A crude oil supply agreement (the "Crude Supply Agreement") provides
  LCR with a 25-year supply of Venezuelan crude oil under a pricing
  formula that incorporates market prices for refined products as well as
  deemed yields, deemed operating costs and deemed margins. The Crude
  Supply Agreement is expected to significantly diminish the impact of
  market volatility on the refining business and stabilize its cash flow
  at attractive levels relative to historic performance. Under this
  arrangement, LCR currently is processing approximately 130,000 barrels
  per day of heavy crude oil, and upon successful completion of the
  upgrade project discussed below is expected to process approximately
  200,000 barrels per day of very heavy crude oil.
 
    LCR is undertaking a major upgrade project to create a world-class
  facility capable of refining very heavy grades of crude oil into
  valuable light products, including reformulated gasoline and low-sulfur
  diesel. Completion of the upgrade project is anticipated in late 1996 or
  early 1997. CITGO has entered into a long-term agreement to purchase the
  upgraded Refinery's gasoline, jet fuel, heating oil and low-sulfur
  diesel at market-based prices.
 
    In 1993, CITGO contributed $100 million to LCR for on-going capital
  projects other than the Refinery upgrade project, giving CITGO an
  approximate 10 percent interest in LCR. The arrangement with CITGO
  provides that the Refinery upgrade project will be funded primarily by
  additional CITGO equity contributions and LCR borrowings, with CITGO
  funding all interest and fees for the borrowings prior to completion.
  Upon completion of the upgrade project, when it receives credit for its
  project-related contributions, CITGO's interest in LCR will increase to
  approximately 40 percent. CITGO also has a one-time option following
  completion of the upgrade to make an additional contribution to LCR in
  order to increase its interest up to 50 percent.
 
. DISCIPLINED CAPITAL SPENDING
 
    The Company's discretionary capital spending strategy focuses on high-
  return projects that enhance manufacturing efficiency, increase
  production volume, upgrade product streams or achieve lower operating
  costs. For example, through a low cost debottleneck project in 1989 the
  Company increased its ethylene capacity from 2.8 to 3.6 billion pounds
  per year. Lyondell continues to develop and review both internal and
  external opportunities to enhance the value of the Company's business
  through increased cash flow. Examples of this approach are the Company's
  1990 acquisition of its polyolefins business and polymers facility,
  which enhanced its petrochemicals business, and the LCR transaction,
  which is improving its refining business.
                                ----------------
 
  Through the strategy described above, Lyondell expects to maximize cash flow
throughout the business cycle by emphasizing low operating costs, high
operating flexibility and stable refining margins. Specifically, management
expects refining operations to generate relatively stable cash flow, while the
Company's large petrochemical capacity positions Lyondell to capture higher
cash flows when the petrochemical cycle improves.
 
                                       4
<PAGE>
 
                             SUMMARY FINANCIAL DATA
 
<TABLE>
<CAPTION>
                                                   AS OF OR FOR
                         --------------------------------------------------------------------------
                         THREE MONTHS
                             ENDED         SIX MONTHS
                           JUNE 30,      ENDED JUNE 30,         YEAR ENDED DECEMBER 31,
                         --------------  ----------------  ----------------------------------------
                          1994    1993    1994     1993     1993    1992    1991    1990      1989
                         ------  ------  -------  -------  ------  ------  ------  ------    ------
                          (UNAUDITED)      (UNAUDITED)
                              (IN MILLIONS, EXCEPT PER SHARE AND CERTAIN OTHER DATA)
<S>                      <C>     <C>     <C>      <C>      <C>     <C>     <C>     <C>       <C>
INCOME STATEMENT DATA:
 Sales and other
  operating revenues.... $  900  $1,080   $1,724   $2,145  $3,850  $4,809  $5,735  $6,499    $5,361
 Cost of sales..........    794   1,040    1,530    2,069   3,627   4,578   5,210   5,777     4,640
 Selling, general and
  administrative
  expenses..............     35      35       69       64     130     127     126     121       108
                         ------  ------  -------  -------  ------  ------  ------  ------    ------
 Operating income.......     71       5      125       12      93     104     399     601       613
 Net interest expense...    (18)    (19)     (35)     (36)    (72)    (69)    (60)    (64)      (57)
 Minority interest......     (2)     --       (5)      --      (5)     --      --      --        --
 Income tax (provision)
  benefit...............    (19)      3      (31)       5     (12)     (9)   (117)   (181)     (182)
                         ------  ------  -------  -------  ------  ------  ------  ------    ------
 Income (loss) before
  cumulative effect of
  accounting changes....     32     (11)      54      (19)      4      26     222     356       374
 Cumulative effect of
  accounting changes(1).     --      --       --       22      22     (10)     --      --        --
                         ------  ------  -------  -------  ------  ------  ------  ------    ------
 Net income............. $   32  $  (11) $    54  $     3  $   26  $   16  $  222  $  356    $  374
                         ======  ======  =======  =======  ======  ======  ======  ======    ======
 Net income (loss) per
  common share:
   Before cumulative
    effect of accounting
    changes............. $  .40  $ (.14) $   .68  $  (.23) $  .06  $  .32  $ 2.78  $ 4.45    $ 4.67
   From cumulative
    effect of accounting
    changes.............     --      --       --      .27     .27    (.12)     --      --        --
                         ------  ------  -------  -------  ------  ------  ------  ------    ------
   Net income........... $  .40  $ (.14) $   .68  $   .04  $  .33  $  .20  $ 2.78  $ 4.45    $ 4.67
                         ======  ======  =======  =======  ======  ======  ======  ======    ======
BALANCE SHEET DATA:
 Cash, restricted cash,
  cash equivalents and
  short-term
  investments(2)........ $   92  $   29  $    92  $    29  $  119  $  121  $  307  $  127    $  245
 Working capital........    214     132      214      132     224     223     375     238       367
 Property, plant and
  equipment, net........    716     621      716      621     655     623     569     568       455
 Total assets...........  1,308   1,159    1,308    1,159   1,231   1,215   1,479   1,372     1,267
 Long-term debt,
  excluding current
  portion...............    707     717      707      717     717     725     554     471       500
 Capitalized lease
  obligations, less
  current portion.......     --      --       --       --      --      --     156     187       214
 Common stockholders'
  equity (deficit)......    (70)    (75)     (70)     (75)    (88)     (6)    122      38         9
OTHER DATA:
 Capital expenditures... $   47  $   13  $    79  $    28  $   69  $   97  $   43  $  145    $  176
 Depreciation and
  amortization(1).......     14      14       29       28      58      39      39      31        19
 Cash flow provided by
  operating activities..     43      28       72       37      84     108     270     386       538
 Distribution to ARCO...     --      --       --       --      --      --      --      --       500
 Dividends per share.... $ .225  $ .225  $   .45  $  .675  $ 1.35  $ 1.80  $ 1.75  $ 4.10(3) $ 1.20
                         ======  ======  =======  =======  ======  ======  ======  ======    ======
 Ethylene, propylene and
  polymers sales
  (million pounds)......  1,458   1,454    2,961    2,761   5,366   5,785   6,000   6,373     5,048
 Refined product sales
  average per day
  (thousand barrels)....    240     288      239      292     263     277     288     301       298
</TABLE>
- --------
(1) See Note 4 of "Notes to Consolidated Financial Statements."
(2) As of June 30, 1994 and December 31, 1993, $45 million and $73 million of
    cash and $12 million and $6 million of short-term investments,
    respectively, were restricted for use in LCR capital projects and other
    expenditures as determined by the LCR owners.
(3) Includes a $2.50 per share special dividend paid in the first quarter of
    1990.
 
                                       5
<PAGE>
 
                       CERTAIN INVESTMENT CONSIDERATIONS
 
  Prospective investors should carefully consider the specific factors set
forth below as well as the other information contained in this Prospectus and
the information incorporated herein by reference.
 
IMPACT OF THE EXCHANGEABLE NOTES ON THE MARKET FOR LYONDELL COMMON STOCK
   
  It is not possible to accurately predict how or whether the 9% Exchangeable
Notes due September 15, 1997 (the "Exchangeable Notes") of Atlantic Richfield
Company ("ARCO") will trade in the secondary market or whether such market will
be liquid. Any market that develops for the Exchangeable Notes is likely to
influence, and be influenced by, the market for the common stock, par value
$1.00 per share (the "Common Stock"), of Lyondell Petrochemical Company
("Lyondell" or the "Company"). For example, the price of the Common Stock could
become more volatile and could be depressed by investors' anticipation of the
potential distribution into the market of substantial additional amounts of
Common Stock at the maturity of the Exchangeable Notes, by possible sales of
Common Stock by investors who view the Exchangeable Notes as a more attractive
means of equity participation in Lyondell and by hedging or arbitrage trading
activity that may develop involving the Exchangeable Notes and Common Stock.
    
CYCLICALITY AND VOLATILITY OF EARNINGS
 
  The Company's historical operating results reflect the cyclical and volatile
nature of both the petrochemical and refining industries. Both industries are
mature and capital intensive, and industry margins are sensitive to supply and
demand cycles. As a result, the Company's earnings may be subject to
significant fluctuations. In general, external factors beyond the Company's
control, such as general economic conditions, competition, international events
and circumstances and governmental regulation, can cause volatility in crude
oil and other feedstock prices, as well as fluctuations in product prices,
volumes, and margins and can magnify the impact of economic cycles on the
Company's businesses.
 
UNCERTAIN PETROCHEMICAL INDUSTRY OUTLOOK
 
  The petrochemical industry historically has experienced alternating periods
of tight supply, causing prices and margins to increase, followed by periods of
substantial capacity additions resulting in oversupply and declining prices and
margins. For example, during the mid 1980s, olefins capacity increases did not
keep pace with demand and by the 1987-1988 period domestic producers were
operating at high capacity utilization rates and prices and margins had
increased substantially. The high profitability experienced by the ethylene
industry during this period peaked in early 1989. As a result of a downturn in
general economic conditions experienced in the late 1980s, the rate of growth
in U.S. demand slowed, which in turn had an adverse effect on ethylene margins.
In addition, increased olefins and polyolefins capacity in the Far East, as
well as increased export sales from Europe and the Middle East to the Far East,
adversely affected net U.S. export sales of polyolefins and, therefore,
ethylene margins. As a consequence, since 1990, the olefins industry, including
the Company, has experienced an overcapacity condition that has resulted in
lower average selling prices and low profit margins. Two new ethylene plants
(including one plant that came on line during the second quarter of 1994),
along with other announced plant expansions, currently are scheduled to
commence operations in the U.S. prior to December 1995, resulting in an
aggregate capacity addition of approximately four billion pounds per year
(approximately 8.6 percent of 1993 domestic industry capacity). There can be no
assurance that future growth in demand for ethylene and its by-products will be
sufficient to utilize current and anticipated capacity. Excess capacity, to the
extent it occurs, may depress volumes and margins. Furthermore, there can be no
assurance that future conditions will not be aggravated by unanticipated
industry capacity additions.
 
COMPETITION; RELIANCE ON MERCHANT MARKET
 
  Both the petrochemical and refining industries in which the Company operates
are highly competitive. Many of the Company's competitors, particularly in
petrochemicals, are larger and have greater financial resources than the
Company. Among Lyondell's petrochemical competitors are some
 
                                       6
<PAGE>
 
of the world's largest chemical companies. In the last several years, there
have been a number of mergers, acquisitions and spin-offs in the petrochemical
industry. This restructuring activity may result in fewer but more competitive
producers with greater financial resources than the Company.
 
  As a producer of olefins primarily for the merchant market, Lyondell may
experience greater variations in its sales volumes and profitability when
industry supply and demand relationships are at extremes in comparison to more
integrated competitors, i.e., those with a higher proportion of captive demand
for olefins derivatives production. Among the refining competitors of LYONDELL-
CITGO Refining Company Ltd. ("LCR") are major integrated petroleum companies
that have their own raw material resources and, in many cases, downstream
markets, both of which tend to decrease the impact of business cycles on these
competitors' sales volumes and profitability.
 
LCR TRANSACTION AND REFINERY UPGRADE PROJECT
 
  REFINERY UPGRADE PROJECT COST AND POTENTIAL DELAYS. The ultimate cost to LCR
of the upgrade project at its refinery (the "Refinery") will have a significant
impact on the value to the Company of the LCR transaction with CITGO Petroleum
Corporation ("CITGO"). The cost of the upgrade project, based on the detailed
engineering completed to date, currently is estimated to be approximately $830
million. In addition, LCR has estimated a 15 percent ($125 million) allowance
for contingency costs, which would increase the total project cost estimate to
approximately $955 million. The final cost of the project will be influenced by
numerous factors, many of which are beyond LCR's control, including the timing
and terms of necessary construction, operating and regulatory permits, as well
as construction schedule delays whether caused by adverse weather conditions,
material shortages, labor disputes or otherwise. In addition, there can be no
assurance that LCR will be able to obtain the numerous required regulatory and
environmental approvals, or that this process will not result in unanticipated
delays.
 
  FINANCING OF REFINERY UPGRADE PROJECT AND POTENTIAL LIMITATIONS ON LCR
DISTRIBUTIONS. A significant portion of the funds for the Refinery upgrade
project are to be provided pursuant to CITGO's contractual commitments to LCR
as well as by financing at the LCR level. To the extent that LCR cannot obtain
financing for its share of costs, CITGO and the Company each will fund one half
of the cost of the upgrade project in excess of $300 million. See "The
Company--Refining--LCR Transaction." There can be no assurance that CITGO will
meet its remaining funding obligations or that LCR will be able to obtain
either construction loans or any other financing of sufficient magnitude or on
terms acceptable to it or to the Company and CITGO. The failure to obtain such
funding or loans could delay or decrease the scope of the Refinery upgrade
project, require the Company to loan or contribute additional amounts to LCR or
to guarantee its borrowings, and affect the repayment by LCR of Company loans.
The Company's ability to make contributions to LCR may, under certain
circumstances, be restricted by the Company's $400 million credit facility. In
addition, the existence of significant levels of financing at the LCR level and
the terms of the related financing agreements could restrict LCR's ability to
make cash distributions or otherwise impair the financial flexibility of the
Company, including its ability to obtain additional financing or to renew its
existing long-term debt. In addition, LCR may enter into other financing
arrangements following the completion of the upgrade project.
 
  CRUDE SUPPLY AGREEMENT. The pricing of the crude oil purchased by LCR under
the crude supply agreement (the "Crude Supply Agreement") is based upon
published market prices of refined products, deemed yields, deemed operating
costs and deemed margins. If the actual yields, costs or volumes differ
substantially from those contemplated by the Crude Supply Agreement, the
benefits of this agreement to LCR could be substantially diminished, and it
could result in lower earnings and cash flow. Furthermore, there may be periods
during which LCR's costs for crude oil under the Crude Supply Agreement may be
higher than might otherwise be available to LCR from other sources.
 
 
                                       7
<PAGE>
 
  The supplier of crude oil under the Crude Supply Agreement is Lagoven, S.A.
("Lagoven"), which like CITGO is a subsidiary of Petroleos de Venezuela, S.A.
("PDVSA"), the Venezuelan national oil company. There are risks associated with
enforcing the provisions of contracts with companies such as Lagoven that are
non-United States affiliates of a sovereign nation. It is impossible to predict
how governmental policies may change under the current or any subsequent
Venezuelan government. In addition, there are risks associated with enforcing
judgments of United States courts against entities whose assets may be located
outside of the United States and whose management does not reside in the United
States. Although the parties have negotiated alternative arrangements in the
event of certain force majeure conditions, including governmental or other
actions restricting or otherwise limiting Lagoven's ability to perform its
obligations, any such alternative arrangements may not be as beneficial as the
Crude Supply Agreement. In the event that CITGO transfers its interest in LCR
to an unaffiliated third party after the completion of the Refinery upgrade
project, Lagoven has an option to terminate the Crude Supply Agreement.
Depending on then current market conditions, breach or termination of the Crude
Supply Agreement could adversely affect the Company. There can be no assurance
that alternative crude oils with similar margins would be available for
purchase by LCR. Furthermore, the breach or termination of the Crude Supply
Agreement would require LCR to return to the practice of purchasing all of its
crude oil feedstocks in the merchant market and would again subject LCR to
significant volatility and price fluctuations.
 
  HEAVY CRUDE OIL PROCESSING. The heavy (22 degree API gravity) Venezuelan
crude oil currently being processed by LCR under the Crude Supply Agreement
contains high levels of heavy metals, naphthenic acids, sulfur and residual
fuels, which make it more difficult to process than lighter, sweeter crude
oils. The Refinery began processing Venezuelan crude oil in the third quarter
of 1992. Although the Company and LCR have made significant progress in
identifying and overcoming obstacles inherent in processing high volumes of
heavy Venezuelan crude oil, unplanned shutdowns of two units were necessary
during 1993 to address limitations and improve processing efficiency. There can
be no assurance that there will not be additional operational interruptions.
See "The Company--Refining--LCR Transaction."
 
  The design of the Refinery upgrade project is based on proven technology and
is intended to result in the processing of 200,000 barrels per day of very
heavy (17 degree API gravity) Venezuelan crude oil after completion of the
project, which is currently expected in late 1996 or early 1997. To the
Company's knowledge, no refinery has previously processed this quantity of 17
degree API gravity crude oil. Although the Company does not presently
anticipate such developments, the design, construction, start up and testing of
the upgrade project are subject to all of the risks of and the consequential
expenses related to such matters as design errors, construction accidents,
fires, explosions and similar events that can potentially affect large complex
manufacturing projects built within substantial existing refining,
petrochemical or other manufacturing plant sites. In addition, there can be no
assurance that the anticipated post-upgrade processing of very heavy (rather
than heavy) Venezuelan crude oil will not require significant additional design
or operational modifications. Furthermore, unanticipated difficulties in
eventually achieving the designed processing capability of the upgraded
Refinery may under certain circumstances result in LCR not being able to
satisfy its minimum processing requirements under the Crude Supply Agreement.
As a consequence, LCR would be required to renegotiate or obtain other
contractual relief with respect to these minimum requirements. Any such risks,
modifications or delays could result in significantly increased costs for the
project or negatively affect LCR's operating results.
 
FINANCING RISKS; POTENTIAL DILUTION
 
  To the extent that the Company requires additional financing, whether to
pursue an expansion, acquisition or other enhancement of its business, or for
other purposes, the primary sources for such financing will be the Company's
internal cash flow, additional debt or equity financing or a combination
 
                                       8
<PAGE>
 
thereof. There can be no assurance that any such debt or equity financing can
be obtained on terms acceptable to the Company. In addition, the existence of
financing at the LCR level could impair the financial flexibility of the
Company. To the extent the Company finances such activities through the
issuance of additional equity securities, the equity interests of its holders
of Common Stock could be substantially diluted. In addition, the Company's $400
million credit facility may restrict under certain circumstances the Company's
ability to incur additional indebtedness. See "Financial Matters--Long-Term
Debt and Financing Arrangements."
 
OPERATING RISKS
 
  Lyondell has two major operating facilities, the petrochemical complex in
Channelview, Texas (the "Channelview Complex") and the Refinery, and the loss
or shutdown over an extended period of operations at either such facility would
have a material adverse effect on the Company. The Company's operations are
subject to the usual hazards associated with petrochemical manufacturing,
petroleum refining, and the related storage (including in underground salt
domes) and transportation of feedstocks and products, including pipeline leaks
and ruptures, explosions, fires, inclement weather and natural disasters,
mechanical failure, unscheduled downtime, transportation interruptions, oil and
chemical spills, discharges or releases of toxic substances or gases, storage
tank leaks, and other environmental risks. These hazards can cause personal
injury and loss of life, severe damage to or destruction of property and
equipment and environmental damage, and may result in suspension of operations.
The Company maintains property, business interruption and casualty insurance
which it believes is in accordance with customary industry practices, but it is
not fully insured against all potential hazards incident to its business.
 
ENVIRONMENTAL AND OTHER GOVERNMENT REGULATIONS
 
  The Company's operations are subject to extensive environmental, health and
safety laws and regulations promulgated by federal, state and local
governments. Many of these laws and regulations provide for substantial fines
and criminal sanctions for violations. The nature of the petrochemical and
refining industries exposes the Company to risks of liability due to the
production, storage, transportation and sale of materials that can cause
contamination or personal injury if released into the environment. In addition,
environmental laws may have a significant effect on the nature and scope of
cleanup of contamination at operating facilities and the costs of
transportation and storage of feedstocks and finished products. The Company
believes that its business, operations and facilities have been and are being
operated in compliance in all material respects with all such applicable laws
and regulations. However, the operation of any petrochemical and refining
business entails risks in this area, and there can be no assurance that
material costs or liabilities will not be incurred. See "The Company--
Environmental Matters" and "--Legal Proceedings."
 
  Lyondell expects that the nature of its businesses will continue to subject
the Company to increasingly stringent environmental and other regulatory
standards. It is difficult to predict the future development of such laws and
regulations or their impact on future earnings and operations, but the Company
anticipates that these standards will continue to require increased capital
expenditures. In particular, the ultimate effect of the Clean Air Act on the
Company's operations will depend on how the law is interpreted and implemented
pursuant to regulations that are currently being developed and on additional
factors such as the evolution of environmental control technologies. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Environmental Matters" and "The Company--Environmental Matters."
 
  The Company's policy is to accrue remediation costs when it is probable that
such efforts will be required and the related costs can be reasonably
estimated. Estimated costs for future environmental compliance and remediation
are necessarily imprecise due to such factors as the continuing evolution of
environmental laws and regulatory requirements, the availability and
application of technology, the identification of presently unknown remediation
sites and the allocation of costs among the responsible
 
                                       9
<PAGE>
 
parties under applicable statutes. On a quarterly basis, the Company evaluates
the status of all significant existing or potential environmental issues,
develops or revises estimates of costs to satisfy known remediation
requirements and adjusts its accruals accordingly; as of June 30, 1994, the
reserve was $19 million. Based upon information presently available, the
Company does not expect that such future costs will have a material adverse
effect on its competitive or financial position or its ongoing results of
operations. However, it is not possible to predict accurately the amount or
timing of costs of any future environmental remediation requirements. Such
costs could be material to future quarterly or annual results of operations. In
addition, the "Superfund" statutes may impose joint and several liability for
the costs of remedial investigations and actions on the entities that arranged
for disposal of the wastes, the waste transporters that selected the disposal
sites and the past and present owners and operators of such sites; responsible
parties (or any one of them, including the Company) may be required to bear all
of such costs regardless of fault, legality of the original disposal or
ownership of the disposal site. In such event, the amount owed by the Company
for liabilities at Superfund sites would be significantly greater.
 
  The Audit Committee of the Board of Directors and its independent counsel
recently completed an investigation into certain allegations by a senior
employee in the Company's legal department regarding environmental
noncompliance. The investigation concluded that two process waste water streams
were not in compliance with certain benzene regulations for a fourteen-month
period and that two incorrect reports had been filed with regulatory
authorities during that period. See "The Company--Environmental Matters--Audit
Committee Report Regarding Alleged Violations of Certain Environmental Laws."
 
CERTAIN RELATED PARTY MATTERS
 
  ARCO and its affiliates are important customers and, in some cases, suppliers
of materials and services, of the Company. During 1993, for instance, the
Company sold $263 million (or 17 percent of petrochemical sales) of products
and services to ARCO Chemical Company, an affiliate of ARCO. Subject to the
contractual agreements that are currently in place with ARCO and its
affiliates, there can be no assurance that these existing business
relationships will be continued unchanged after the offering of the
Exchangeable Notes. ARCO has expressed its current intention as to how it will
vote its shares of Lyondell Common Stock, and ARCO and Lyondell have entered
into an agreement limiting certain of ARCO's rights as a stockholder of
Lyondell. See "Relationship with ARCO--General" and "--Registration Rights
Agreement with ARCO." Notwithstanding ARCO's current intentions and applicable
contractual restrictions, there is no assurance regarding the extent to which
its influence on the Company's actions and decisions will be limited.
 
POTENTIAL RESTRICTIONS ON DIVIDEND PAYMENTS
 
  In 1993, the Company decreased the amount of its regular quarterly dividend
from $0.45 to $0.225 per share as a result of the Board of Directors' decision
that the previous level was no longer appropriate in light of current business
conditions. The future declaration and payment of dividends and the amount
thereof will depend upon the Company's results of operations, financial
condition, cash position and requirements, investment opportunities, future
prospects and other factors deemed relevant by the Board of Directors.
 
  Pursuant to the terms of its $400 million unsecured credit facility (the
"Credit Facility"), the Company is subject to several restrictive covenants
including a restriction as to the payment of dividends. In addition, certain of
the Company's debt instruments contain provisions (the "Put Rights") that
provide that the holders of such debt may under certain circumstances require
the Company to repurchase the debt at par. The Put Rights may be triggered by,
among other things, the making of certain unearned distributions to
stockholders, other than regular dividends, that are followed by a specified
decline in the public ratings on such debt. Regular dividends are defined in
the Company's debt instruments as those quarterly cash dividends determined in
good faith by the Company's Board of Directors (whose determination is
conclusive) to be appropriate in light of the Company's results of
 
                                       10
<PAGE>
 
operations and capable of being sustained. See "Financial Matters--Long-Term
Debt and Financing Arrangements." The Credit Facility includes restrictive
covenants regarding the incurrence of additional debt, the maintenance of
certain fixed charge coverage and leverage ratios and the making of
contributions to LCR, as well as the payment of dividends to the extent the
Company's net income after January 1, 1994 generally does not exceed, over
time, dividends declared or paid after that date. As of June 30, 1994,
approximately $104 million was available for the payment of dividends, and the
Company is currently in compliance with the financial and other covenants in
the Credit Facility and its other debt instruments. However, if the Company
were to fail to comply with any of its financial covenants, there can be no
assurance that as a condition to waiving any default or otherwise providing the
Company with continued access to credit, lenders would not impose certain
restrictions on the Company's operations, including a requirement that the
Company eliminate or severely restrict dividend payments.
 
                   PRICE RANGE OF COMMON STOCK AND DIVIDENDS
   
  The Common Stock is listed on the New York Stock Exchange ("NYSE") under the
trading symbol "LYO." ARCO has advised the Company that, as of August 1, 1994,
ARCO owned 39,921,400 shares of the Common Stock, which represented 49.9
percent of the outstanding shares.     
   
  The reported high and low sale prices of the Common Stock based on the New
York Stock Exchange Composite Tape for each quarter from January 1, 1992
through August 1, 1994, inclusive, were:     
 
<TABLE>
<CAPTION>
      PERIOD                                                     HIGH     LOW
      ------                                                    ------- -------
      <S>                                                       <C>     <C>
      1992
        First Quarter.......................................... $25 3/4 $22 1/8
        Second Quarter.........................................  25 7/8  21 1/8
        Third Quarter..........................................  25 5/8  21 3/8
        Fourth Quarter.........................................  25 1/2  23 1/8
      1993
        First Quarter..........................................  29 1/2  23 3/4
        Second Quarter.........................................  26 5/8    19
        Third Quarter..........................................  21 5/8  16 3/4
        Fourth Quarter.........................................  21 1/2  18 3/8
      1994
        First Quarter..........................................  23 7/8  20 5/8
        Second Quarter.........................................  26 7/8  21 1/4
        Third Quarter (through August 1).......................  25 3/4     24
</TABLE>
   
  On August 1, 1994 the closing price of the Common Stock was $24.75 and there
were approximately 3,000 record holders of the Common Stock, including The
Depositary Trust Company which holds shares of Common Stock on behalf of an
indeterminate number of beneficial owners.     
 
  Since January 1, 1992, Lyondell has declared per share quarterly cash
dividends (which were paid in the subsequent quarter) as follows:
 
<TABLE>
<CAPTION>
                                 1ST QUARTER 2ND QUARTER 3RD QUARTER 4TH QUARTER
                                 ----------- ----------- ----------- -----------
      <S>                        <C>         <C>         <C>         <C>
      1992......................    $0.45      $0.45       $0.45       $0.45
      1993......................    $0.45      $0.225*     $0.225      $0.225
      1994......................    $0.225     $0.225**
</TABLE>
 
  *On July 23, 1993, the Board of Directors decreased the amount of the regular
quarterly dividend from $0.45 to $0.225 per share. For a discussion of this
dividend reduction, see "Management's Discussion and Analysis of Financial
Condition and Results of Operations--Current Business Outlook."
  **On July 22, 1994, the Board of Directors declared a regular quarterly
dividend in the amount of $0.225 per share payable on September 15, 1994 to
stockholders of record on August 12, 1994.
 
                                       11
<PAGE>
 
  The declaration and payment of dividends is at the discretion of the Board of
Directors of the Company. The future declaration and payment of dividends and
the amount thereof will be dependent upon the Company's results of operations,
financial condition, cash position and requirements, investment opportunities,
future prospects and other factors deemed relevant by the Board of Directors.
 
  Subject to these considerations and to the legal considerations discussed in
the following paragraph, the Company currently intends to distribute to its
stockholders cash dividends on its Common Stock at a quarterly rate of $0.225
per share.
 
  In order to declare and pay dividends in the future, the Company's Board of
Directors will have to make the determination that for purposes of the General
Corporation Law of the State of Delaware (the "Delaware Law") there is a
sufficient amount of surplus (the amount by which its assets exceed its
liabilities and capital) or sufficient net profits at that time. In determining
the amount of surplus of the Company for purposes of Delaware Law, the
Company's assets, including the stock of any of its subsidiaries, may be valued
by the Board of Directors at their current market value. If prior to or as a
result of any future dividend the Company had a negative stockholders' equity
(as is currently the case), the Company's Board of Directors would have to make
the determination that, based upon its familiarity with the Company's business,
prospects and financial condition, the Company's recent earnings history, an
appraisal of the Company's assets and discussions with the Company's executive
officers, legal department and accountants, the dividend was a permitted
dividend under Delaware Law.
 
  For a discussion of possible restrictions on the payment of dividends, see
"Certain Investment Considerations--Potential Restrictions on Dividend
Payments."
 
                                 CAPITALIZATION
 
  The following table sets forth the capitalization of the Company as of June
30, 1994. This table should be read in conjunction with the historical
financial statements of the Company and the related notes thereto appearing
elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                                  JUNE 30, 1994
                                                                  -------------
                                                                  (IN MILLIONS)
<S>                                                               <C>
Long-term debt, excluding current portion........................     $ 707
Stockholders' equity (deficit):
  Common stock, $1 par value, 250,000,000 shares authorized,
   80,000,000 issued and outstanding(1)..........................        80
  Additional paid-in capital.....................................       158
  Accumulated deficit............................................      (308)
                                                                      -----
  Total stockholders' deficit....................................       (70)
                                                                      -----
Total capitalization.............................................     $ 637
                                                                      =====
</TABLE>
- --------
(1) Excludes 1,464,328 shares of Common Stock issuable pursuant to outstanding
    employee stock options at June 30, 1994.
 
                                       12
<PAGE>
 
                            SELECTED FINANCIAL DATA
 
  The following selected income statement and balance sheet data for each of
the five years in the period ending December 31, 1993, have been derived from
financial statements audited by Coopers & Lybrand, independent accountants.
Their report on the Company's financial statements as of December 31, 1993 and
1992 and for each of the three years for the period ended December 31, 1993 is
included elsewhere in this Prospectus. The historical financial data set forth
with respect to the Company as of and for the three months and six months
ended June 30, 1994 and 1993 have been derived from unaudited financial
statements that, in the opinion of management, reflect all normal recurring
adjustments necessary for a fair presentation of such data. The results of
operations for interim periods are not necessarily indicative of the results
to be expected for the full year. This information should be read in
conjunction with "Management's Discussion and Analysis of Financial Condition
and Results of Operations" and with the consolidated financial statements and
notes thereto appearing elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                 AS OF OR FOR
                         -----------------------------------------------------------------------
                         THREE MONTHS    SIX MONTHS
                          ENDED JUNE     ENDED JUNE
                             30,             30,             YEAR ENDED DECEMBER 31,
                         -------------  --------------  ----------------------------------------
                         1994    1993    1994    1993    1993    1992    1991    1990      1989
                         -----  ------  ------  ------  ------  ------  ------  ------    ------
                         (UNAUDITED)     (UNAUDITED)
                            (IN MILLIONS, EXCEPT PER SHARE AND CERTAIN OTHER DATA)
<S>                      <C>    <C>     <C>     <C>     <C>     <C>     <C>     <C>       <C>
INCOME STATEMENT DATA:
 Sales and other
  operating revenues.... $ 900  $1,080  $1,724  $2,145  $3,850  $4,809  $5,735  $6,499    $5,361
 Cost of sales..........   794   1,040   1,530   2,069   3,627   4,578   5,210   5,777     4,640
 Selling, general and
  administrative
  expenses..............    35      35      69      64     130     127     126     121       108
                         -----  ------  ------  ------  ------  ------  ------  ------    ------
 Operating income.......    71       5     125      12      93     104     399     601       613
 Net interest expense...   (18)    (19)    (35)    (36)    (72)    (69)    (60)    (64)      (57)
 Minority Interest......    (2)     --      (5)     --      (5)     --      --      --        --
 Income tax (provision)
  benefit...............   (19)      3     (31)      5     (12)     (9)   (117)   (181)     (182)
                         -----  ------  ------  ------  ------  ------  ------  ------    ------
 Income (loss) before
  cumulative effect of
  accounting changes....    32     (11)     54     (19)      4      26     222     356       374
 Cumulative effect of
  accounting changes(1).    --      --      --      22      22     (10)     --      --        --
                         -----  ------  ------  ------  ------  ------  ------  ------    ------
 Net income............. $  32  $  (11) $   54  $    3  $   26  $   16  $  222  $  356    $  374
                         =====  ======  ======  ======  ======  ======  ======  ======    ======
 Net income (loss) per
  common share:
   Before cumulative
    effect of accounting
    changes............. $ .40  $ (.14) $  .68  $ (.23) $  .06  $  .32  $ 2.78  $ 4.45    $ 4.67
   From cumulative
    effect of accounting
    changes.............    --      --      --     .27     .27    (.12)     --      --        --
                         -----  ------  ------  ------  ------  ------  ------  ------    ------
   Net income........... $ .40  $ (.14) $  .68  $  .04  $  .33  $  .20  $ 2.78  $ 4.45    $ 4.67
                         =====  ======  ======  ======  ======  ======  ======  ======    ======
BALANCE SHEET DATA:
 Cash, restricted cash,
  cash equivalents and
  short-term
  investments(2)........ $  92  $   29  $   92  $   29  $  119  $  121  $  307  $  127    $  245
 Working capital........   214     132     214     132     224     223     375     238       367
 Property, plant and
  equipment, net........   716     621     716     621     655     623     569     568       455
 Total assets........... 1,308   1,159   1,308   1,159   1,231   1,215   1,479   1,372     1,267
 Long-term debt,
  excluding current
  portion...............   707     717     707     717     717     725     554     471       500
 Capitalized lease
  obligations, less
  current portion.......    --      --      --      --      --      --     156     187       214
 Common stockholders'
  equity (deficit)......   (70)    (75)    (70)    (75)    (88)     (6)    122      38         9
OTHER DATA:
 Capital expenditures... $  47  $   13  $   79  $   28  $   69  $   97  $   43  $  145    $  176
 Depreciation and
  amortization(1).......    14      14      29      28      58      39      39      31        19
 Cash flow provided by
  operating activities..    43      28      72      37      84     108     270     386       538
 Distribution to ARCO...    --      --      --      --      --      --      --      --       500
 Dividends per share.... $.225  $ .225  $  .45  $ .675  $ 1.35  $ 1.80  $ 1.75  $ 4.10(3) $ 1.20
                         =====  ======  ======  ======  ======  ======  ======  ======    ======
 Ethylene, propylene and
  polymers sales
  (million pounds)...... 1,458   1,454   2,961   2,761   5,366   5,785   6,000   6,373     5,048
 Refined product sales
  average per day
  (thousand barrels)....   240     288     239     292     263     277     288     301       298
</TABLE>
- -------
(1) See Note 4 of "Notes to Consolidated Financial Statements."
(2) As of June 30, 1994 and December 31, 1993, $45 million and $73 million of
    cash and $12 million and $6 million of short-term investments,
    respectively, were restricted for use in LCR capital projects and other
    expenditures as determined by the LCR owners.
(3) Includes a $2.50 per share special dividend paid in the first quarter of
    1990.
 
                                      13
<PAGE>
 
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                           AND RESULTS OF OPERATIONS
 
GENERAL
 
  On July 1, 1993, the Company and CITGO announced the commencement of
operations of LCR, a new entity owned by subsidiaries of the Company and CITGO.
LCR owns and operates the refining business formerly owned by the Company,
including the full-conversion Refinery. LCR is undertaking a major upgrade
project at the Refinery to enable the facility to process substantial
additional volumes of very heavy crude oil. CITGO is providing a major portion
of the funds for the upgrade project and has provided in excess of $100 million
for funding other capital projects.
 
  The cost of the upgrade project, based on the detailed engineering completed
to date, currently is estimated to be approximately $830 million. In addition,
LCR has estimated a 15 percent ($125 million) allowance for contingency costs,
which would increase the total project cost estimate to approximately $955
million. The final cost of the project will be influenced by numerous factors,
many of which are beyond LCR's control, including the timing and terms of
necessary construction, operating and regulatory permits, as well as
construction schedule delays whether caused by adverse weather conditions,
material shortages, labor disputes or otherwise.
 
  On July 1, 1993, LCR entered into a long-term Crude Supply Agreement with
Lagoven, an affiliate of CITGO. In addition, under terms of a long-term product
sales agreement ("Products Agreement"), CITGO is purchasing a substantial
portion of the refined products produced at the Refinery. Both Lagoven and
CITGO are subsidiaries of PDVSA, the national oil company of Venezuela.
 
  Prior to commencment of LCR operations on July 1, 1993, the petrochemical and
refining operations of the Company were considered to be a single segment due
to the integrated nature of their operations. However, these operations are now
considered to be separate segments due to the formation of LCR and the related
separate management and operations of that entity.
 
  The petrochemical segment consists of olefins, including ethylene, propylene,
butadiene, butylenes and specialty products; polyolefins, including
polypropylene and low density polyethylene; aromatics produced at the
Channelview Complex, including benzene and toluene; methanol and refinery
blending stocks.
 
  The refining segment consists of refined petroleum products, including
gasoline, heating oil and jet fuel; aromatics produced at the Refinery,
including benzene, toluene, paraxylene and orthoxylene; lubricants, including
industrial and motor oils; olefins feedstocks and crude oil resales.
 
                                       14
<PAGE>
 
  The following table sets forth sales volumes for the Company's major
products, for the periods indicated. Sales volumes include production,
purchases of products for resale, propylene production from the product
flexibility unit and draws from inventory.
 
<TABLE>
<CAPTION>
                          FOR THREE    FOR SIX
                           MONTHS      MONTHS
                         ENDED JUNE  ENDED JUNE
                             30,         30,      FOR YEAR ENDED DECEMBER 31,
                         ----------- ----------- -----------------------------
                         1994  1993  1994  1993    1993      1992      1991
                         ----- ----- ----- ----- --------- --------- ---------
                                             (IN MILLIONS)
<S>                      <C>   <C>   <C>   <C>   <C>       <C>       <C>
Selected petrochemical
 products (excluding
 intersegment sales):
  Ethylene, propylene
   and polymers
   (pounds)............. 1,458 1,454 2,961 2,761     5,366     5,785     6,000
  Other olefins
   (pounds)(*)..........   249   312   486   599     1,150     1,158     1,112
  Methanol (gallons)(*).    46    62    92   111       225       212       224
  Aromatics (gallons)...    41    26    77    54       125       112       108
Refined products
 (thousand barrels per
 day) (excluding
 intersegment sales):
  Gasoline..............   103   124   108   132       120       125       131
  Heating oil (no. 2
   distillate)..........    51    72    50    68        62        60        74
  Jet fuel..............    29    33    26    36        30        38        33
  Aromatics.............     7    12     8    12        10        11        11
  Other refined
   products.............    50    47    47    44        41        43        39
                         ----- ----- ----- ----- --------- --------- ---------
    Total refined
     products volumes...   240   288   239   292       263       277       288
                         ===== ===== ===== ===== ========= ========= =========
</TABLE>
- --------
(*) The 1994 amounts exclude volumes now sold as MTBE.
 
  The following table sets forth the Company's sales and other revenues for
the periods indicated:
 
<TABLE>
<CAPTION>
                                                FOR SIX
                           FOR THREE MONTHS  MONTHS ENDED     FOR YEAR ENDED
                            ENDED JUNE 30,     JUNE 30,        DECEMBER 31,
                           ----------------- ------------- --------------------
                            1994     1993     1994   1993   1993   1992   1991
                           ----------------- ------ ------ ------ ------ ------
                                              (IN MILLIONS)
<S>                        <C>     <C>       <C>    <C>    <C>    <C>    <C>
Petrochemical products
 (excluding intersegment
 sales):
  Ethylene, propylene and
   polymers...............    $232 $     226  $ 439 $  430 $  808 $  939 $1,135
  Other olefins...........      38        49     73     90    169    177    171
  Methanol................      27        23     50     41     89     77    100
  Aromatics...............      43        26     75     56    120    121    130
  Other petrochemical
   products and other
   revenues...............      46        32     89     63    140     95    130
                           ------- --------- ------ ------ ------ ------ ------
    Total petrochemical
     products sales.......     386       356    726    680  1,326  1,409  1,666
                           ------- --------- ------ ------ ------ ------ ------
Refined products
 (excluding intersegment
 sales):
  Gasoline................     201       278    388    563    950  1,123  1,289
  Heating oil (no. 2
   distillate)............      88       144    172    272    481    510    667
  Jet fuel................      53        69     96    151    245    342    316
  Aromatics...............      32        52     70     97    167    193    195
  Other refined products
   and other revenues.....      82        83    153    157    280    339    294
                           ------- --------- ------ ------ ------ ------ ------
    Total refined products
     sales................     456       626    879  1,240  2,123  2,507  2,761
                           ------- --------- ------ ------ ------ ------ ------
Crude oil resales(**).....      58        98    119    225    401    893  1,308
                           ------- --------- ------ ------ ------ ------ ------
    Total................. $   900 $   1,080 $1,724 $2,145 $3,850 $4,809 $5,735
                           ======= ========= ====== ====== ====== ====== ======
</TABLE>
- --------
(**) Crude oil resales consist of revenues from the resale of previously
     purchased crude oil and from locational exchanges of crude oil that are
     settled on a cash basis. Crude oil exchanges and resales facilitate the
     operation of the Company's petroleum processing business by allowing the
     Company to optimize the crude oil feedstock mix in response to market
     conditions and refinery maintenance turnarounds and also to reduce
     transportation costs.
 
                                      15
<PAGE>
 
RESULTS OF OPERATIONS
 
 OVERVIEW
 
 Three Months and Six Months Ended June 30, 1994 and 1993
 
  Net income for the second quarter of 1994 was $32 million or $.40 per share
compared to net loss of $11 million or $.14 per share for the second quarter of
1993. The net loss in the second quarter of 1993 included charges of $6 million
resulting from a write-off of engineering costs associated with the
cancellation of a capital project and $2 million for a workforce reduction and
realignment. Excluding the effects of these adjustments, earnings improved $35
million during the second quarter of 1994 compared to the second quarter of
1993. This improvement was primarily due to higher margins for petrochemicals.
 
  Net income for the second quarter of 1994 was $10 million higher compared to
the first quarter of 1994. This increase was primarily due to higher
petrochemical margins, partially offset by lower ethylene sales volumes and
lower profitability within the refining segment.
 
  Net income for the first six months of 1994 was $54 million or $.68 per share
compared to a net income of $3 million or $.04 per share for the first six
months of 1993. First six months 1993 earnings included a $22 million favorable
adjustment for the cumulative effect related to prior periods associated with a
change in accounting for major maintenance turnarounds. Excluding the effect of
this accounting change, earnings improved $73 million during the first six
months of 1994 compared to the first six months of 1993. This improvement was
primarily due to higher margins for petrochemicals and refined products as well
as higher ethylene sales volumes.
 
 Years Ended December 31, 1993, 1992 and 1991
 
  Net income for 1993 was $26 million or $0.33 per share compared with $16
million or $0.20 per share in 1992 and $222 million or $2.78 per share in 1991.
Earnings for 1993 included a net $13 million after-tax benefit associated with
a change in accounting for major maintenance turnarounds consisting of a $22
million favorable adjustment for the cumulative effect related to prior
periods, partially offset by a $9 million charge to current operations.
Earnings for 1992 reflect a net after-tax charge of $10 million for the
cumulative effect related to prior periods of adopting Financial Accounting
Standards Board mandated accounting standards for postretirement benefits and
income taxes. Excluding the effect of these accounting changes, the earnings
decline was primarily due to lower ethylene sales volumes and lower polyolefins
margins, partially offset by higher refined products margins. The decrease in
1992 versus 1991 resulted primarily from lower refining and ethylene margins as
well as higher maintenance expenses for scheduled and unscheduled downtime at
the Refinery.
 
  The 1993 results included after-tax charges of $11 million consisting of the
cancellation of a capital project, an increase in the environmental reserve and
a workforce reduction and realignment and an additional charge of $3 million
for an adjustment to deferred income taxes associated with an increase in the
federal income tax rate. These charges were partially offset by a benefit of $7
million due to a contract adjustment and LIFO inventory profits. Net income in
1992 included a benefit of $3 million due to an insurance recovery. This
compares to a benefit of $25 million in 1991 primarily associated with
insurance and litigation settlements and LIFO inventory profits.
 
 PETROCHEMICAL SEGMENT
 
 Three Months and Six Months Ended June 30, 1994 and 1993
 
  Revenues. Sales and other operating revenues for the second quarter of 1994
were $439 million compared to $400 million for the second quarter of 1993. The
$39 million increase was primarily due
 
                                       16
<PAGE>
 
to higher petrochemical sales prices reflecting the improved worldwide economy
which has created better market conditions for petrochemicals generally.
 
  Sales and other operating revenues for the first six months of 1994 were $823
million compared to $790 million for the first six months of 1993, an increase
of $33 million. The increase was caused by higher petrochemical sales volumes,
partially offset by generally lower petrochemical sales prices except for sales
prices of methanol which were higher. Higher demand for petrochemicals was
caused by the improved worldwide economy. Methanol sales prices were higher due
to higher demand caused by the improvement in the worldwide economy and
increased use for MTBE as well as industry supply disruptions.
 
  Cost of Sales. Cost of sales was $362 million in the second quarter of 1994
compared to $393 million in the second quarter of 1993, a decrease of $31
million. Cost of sales for the first six months of 1994 was $65 million lower
compared to the first six months of 1993. Contributing to these decreases were
lower feedstock costs generally caused by lower crude oil prices and the write-
off during the second quarter of 1993 of engineering costs associated with the
cancellation of the capital project.
 
  Selling, General and Administrative Expenses. Selling, general and
administrative expenses for the second quarter of 1994 were unchanged at $9
million compared to the second quarter of 1993. Selling, general and
administrative expenses were $1 million higher for the first six months of 1994
compared to the first six months of 1993.
 
  Operating Income. Operating income for the second quarter of 1994 was $68
million compared to an operating loss of $2 million in the second quarter of
1993. The $70 million increase was primarily due to higher ethylene and
methanol sales margins. Improved ethylene margins resulted primarily from lower
feedstock costs and higher ethylene sales prices. Olefins feedstock costs were
lower due to lower crude oil prices. Ethylene sales prices were higher due to
higher demand caused by improvement in the worldwide economy, particularly in
the U.S. automotive and construction sectors. Methanol margins were higher
primarily due to higher sales prices.
 
  Operating income for the second quarter of 1994 compared to the first quarter
of 1994 increased $29 million. The increase was primarily due to higher
ethylene margins, partially offset by lower ethylene sales volumes. Ethylene
margins continued to improve during the current quarter due to higher sales
prices caused by improvement in the worldwide economy. Although industry demand
for ethylene was strong and production rates remained high, the Company's
ethylene sales volumes were lower during the current period due to the
repayment of product as a result of inventory exchanges entered into during
prior periods.
 
  Operating income for the first six months of 1994 was $107 million compared
to $10 million for the first six months of 1993. The $97 million increase was
primarily due to higher ethylene and methanol sales margins and to higher
ethylene sales volumes. The higher methanol sales margins and higher ethylene
sales volumes were caused by the higher demand brought about by the improvement
in the worldwide economy. The higher ethylene sales margins were due to lower
olefins feedstock costs.
 
 Years Ended December 31, 1993, 1992 and 1991
 
  Revenues. Sales and other operating revenues, including intersegment sales,
were $1.5 billion in 1993 compared to $1.7 billion in 1992 and $2.0 billion in
1991. The 1993 decrease of $169 million compared to 1992 was primarily due to
lower olefins and polyolefins sales volumes and prices caused by continued weak
demand associated with poor worldwide industry conditions and higher industry
production due to reduced maintenance downtime during 1993.
 
  The 1992 decrease in sales and other operating revenues of $284 million
versus 1991 was primarily due to lower sales prices for olefins and methanol.
Olefins sales prices were negatively affected by the continued weak worldwide
economy and by additional industry production capability due to capacity
additions.
 
                                       17
<PAGE>
 
  Cost of Sales. Cost of sales was $1.4 billion in 1993 compared to $1.5
billion in 1992 and $1.7 billion in 1991. The 1993 decrease of $124 million
compared to 1992 and the 1992 decrease of $175 million compared to 1991 were
principally due to lower olefins feedstock costs due to the curtailment of
production resulting from the poor economic conditions and to a lesser extent
to lower feedstock prices.
 
  Cost of sales was reduced in 1993 and 1992 by $5 million and $2 million,
respectively, and was increased $2 million in 1991 relating to LIFO inventory
adjustments.
 
  Operating Income. Operating income amounted to $57 million in 1993 compared
to $102 million in 1992 and $213 million in 1991. The decrease of $45 million
in operating income in 1993 compared to 1992 was primarily due to lower
ethylene sales volumes and lower polyolefins margins. Ethylene sales volumes
and polyolefins margins were lower primarily due to poor industry and economic
conditions.
 
  The decrease of $111 million in operating income in 1992 compared to 1991 was
primarily due to lower ethylene and methanol margins. Ethylene margins were
negatively affected by the continued weak worldwide economy and by industry
capacity additions. Methanol sales prices were lower due to the dissipation
during 1992 of the Gulf War related price premium created during 1990 and 1991.
Contributing to the decrease in operating income was the absence of a $12
million one-time gain recorded in 1991 for proceeds received from an out-of-
period settlement of litigation.
 
 REFINING SEGMENT
 
 Three Months and Six Months Ended June 30, 1994 and 1993
 
  Revenues. Sales and other operating revenues for the second quarter of 1994
were $570 million compared to $789 million for the second quarter of 1993, a
reduction of $219 million. Sales and other operating revenues for the first six
months of 1994 were $1,105 million, a $498 million reduction compared to the
first six months of 1993. These decreases were due to lower resale volumes of
purchased light refined products, lower sales prices for refined products and
lower crude oil resales. Effective with the beginning of LCR operations on July
1, 1993, a majority of the refined products produced at the Refinery is sold to
CITGO under the Products Agreement and, as a result, the purchase and resale
activity for light refined products conducted for logistic and other reasons
declined during the current period. Refined products sales prices were lower
primarily due to lower industry crude oil prices. Crude oil resale volumes were
lower due to reduced logistical purchases required to meet refinery feedstock
requirements, a significant percentage of which are satisfied by Venezuelan
crude oil purchased under the Crude Supply Contract.
 
  Cost of Sales. Cost of sales was $541 million in the second quarter of 1994
compared to $756 million in the second quarter of 1993, a decrease of $215
million. Cost of sales decreased by $518 million in the first six months of
1994 compared to the first six months of 1993. These decreases were primarily
due to lower purchases for resale of light refined products, lower purchases of
crude oil that were resold and lower feedstock costs primarily due to lower
crude oil prices.
 
  Selling, General and Administrative Expenses. Selling, general and
administrative expenses were $14 million in the second quarter of 1994, an
increase of $2 million compared to the second quarter of 1993. Selling, general
and administrative expenses increased by $5 million in the first six months of
1994 compared to the first six months of 1993. These increases were primarily
due to general and administrative expenses attributable to the creation of LCR
as a separate entity and the treatment of ongoing costs beginning July 1, 1993.
 
  Operating Income. Operating income for the second quarter of 1994 was $15
million compared to $21 million for the second quarter of 1993. The $6 million
decrease was primarily due to lower industry refining margins, partially offset
by higher Venezuelan crude oil processing rates and improved profits from
lubricants.
 
  Operating income for the second quarter of 1994 was lower by $11 million
compared to the first quarter of 1994. The decrease was primarily due to lower
aromatics profitability and lower refined
 
                                       18
<PAGE>
 
products margins. Also contributing to the decrease was lower profitability for
lubricants. Contributions from aromatics declined from a very strong first
quarter primarily due to unit downtime for maintenance turnarounds. Refined
products margins were lower primarily due to crude oil costs increasing more
rapidly than product prices.
 
  Operating income for the first six months of 1994 was $41 million compared to
$26 million for the first six months of 1993. The $15 million increase was
primarily due to improved refined products margins. Refined products margins
were higher primarily due to processing higher volumes of Venezuelan crude oil
purchased under the Crude Supply Contract.
 
 Years Ended December 31, 1993, 1992 and 1991
 
  Revenues. Sales and other operating revenues, including intersegment sales,
were $2.8 billion in 1993 compared to $3.7 billion in 1992 and $4.5 billion in
1991. The 1993 decrease of $973 million compared to 1992 was due to lower crude
oil resale volumes, lower sales prices for refined products and lower resale
volumes of purchased light products. Crude oil resale volumes were lower due to
reduced logistical purchases required to meet refinery feedstock requirements
which were impacted by higher Venezuelan crude oil volumes purchased under the
Crude Supply Agreement. Refined products sales prices were lower as additional
industry supply exceeded demand growth due to additions of oxygenates,
primarily MTBE to meet stricter environmental standards, as well as new
industry conversion capacity. The purchase and resale activity for light
refined products conducted for logistic and other reasons was curtailed during
the current period because, effective with the beginning of LCR operations on
July 1, 1993, a majority of the refined products produced at the Refinery are
now sold to CITGO under the Products Agreement.

  The 1992 decrease in sales and other operating revenues of $790 million
versus 1991 was primarily due to lower crude oil resales and to lower sales
prices and volumes for refined products. The price premium that existed for
refined products during 1991 that was caused by the 1990-1991 Gulf War
dissipated in 1992 resulting in lower prices. Refined products sales volumes
were lower primarily due to lower production resulting from scheduled and
unscheduled downtime of major units.
 
  Cost of Sales. Cost of sales was $2.6 billion in 1993, compared to $3.6
billion in 1992 and $4.2 billion in 1991. The 1993 decrease compared to 1992 of
$1,010 million was principally due to lower quantities of crude oil purchased,
lower light refined products purchased and lower crude oil prices. Crude oil
purchases were lower due to the reduced logistical purchases. Purchases of
light refined products were lower primarily due to lower purchases for resale
activity. Lower crude oil prices were due to generally lower industry-wide
crude oil prices and to the processing of higher volumes of lower priced heavy
Venezuelan crude oil purchased under the Crude Supply Agreement.
 
  The 1992 decrease compared to 1991 of $605 million was principally due to
lower crude oil purchases that were resold and to lower refining feedstock
costs. Refining feedstock costs were lower primarily due to lower production
resulting from the scheduled and unscheduled downtime and a reduction in crude
oil runs due to unfavorable margins. Partially offsetting this decrease were
higher maintenance expenses related to the scheduled and unscheduled downtime.
Cost of sales was reduced in 1991 by $8 million relating to LIFO inventory
profits.
 
  Selling, General and Administrative Expenses. Selling, general and
administrative expenses were $48 million in 1993, compared to $43 million in
1992 and $42 million in 1991. The increase in 1993 compared to 1992 of $5
million resulted primarily from higher personnel and realignment expenses
associated with ongoing operations of LCR starting on July 1, 1993.
 
  Operating Income. Operating income amounted to $81 million in 1993, compared
to $49 million in 1992 and $235 million in 1991. The $32 million increase in
1993 compared to 1992 was primarily due to improved refined products margins,
partially offset by higher selling, general and administrative expenses.
Refined products margins were higher due to processing higher volumes of lower
priced heavy Venezuelan crude oil purchased under the Crude Supply Agreement.
 
                                       19
<PAGE>
 
  The decrease in operating income of $186 million in 1992 compared to 1991
resulted primarily from lower refined products margins and to higher
maintenance expenses. Refined products margins were lower primarily because
decreasing product prices more than offset reductions in crude oil costs.
Product prices were lower due to the dissipation during 1992 of the Gulf War
related price premium created in 1990 and 1991. Higher maintenance expenses and
the reduced ability to process higher margin heavy crude oils which resulted
from the scheduled and unscheduled downtime of major units during 1992
contributed to lower operating profits. Also contributing to the decrease in
operating income during 1992 compared to 1991 was a net reduction in benefits
of $11 million from insurance settlements and lower LIFO inventory profits of
$8 million.
 
 UNALLOCATED
 
 Three Months and Six Months Ended June 30, 1994 and 1993
 
  General and Administrative Expenses. General and administrative expenses were
$12 million in the second quarter of 1994 compared to $14 million in the second
quarter of 1993, a decrease of $2 million. General and administrative expenses
were $23 million in the first six months of 1994, a $1 million decrease
compared to the first six months of 1993. The improvement was primarily due to
the charge during the second quarter of 1993 for the workforce reduction and
realignment.
 
  Minority Interest in LYONDELL-CITGO Refining Company Ltd. Minority interest
was $2 million in the second quarter of 1994 and $5 million for the first six
months of 1994, representing CITGO's allocated share of LCR's income.
 
  Income Tax. The effective income tax rate during the second quarter of 1994
from continuing operations was 37 percent compared to 22 percent (tax benefit)
for the second quarter of 1993. The effective income tax rate during the first
six months of 1994 from continuing operations was 36 percent compared to 23
percent (tax benefit) for the year earlier period. The tax benefit in 1993 was
reduced by a charge to state deferred taxes related to Texas franchise taxes,
resulting in relatively low effective income tax benefit rates.
 
 Years Ended December 31, 1993, 1992 and 1991
 
  Selling, General and Administrative. General and administrative expenses were
$45 million in 1993, $47 million in 1992 and $49 million in 1991. The reduction
of $2 million in general and administrative expenses in 1993 compared to 1992
and in 1992 compared to 1991 primarily resulted from lower personnel related
costs.
 
  Interest Expense and Interest Income. Interest expense was $74 million in
1993 compared to $79 million in 1992 and $74 million in 1991. The $5 million
reduction in interest expense in 1993 compared to 1992 was primarily caused by
a reduction of outstanding debt due to the prepayment of amounts due under
capitalized leases during April, 1992. The $5 million increase in 1992 compared
to 1991 resulted from higher average debt outstanding in 1992 which more than
offset lower interest rates.
 
  Interest income was $2 million in 1993 compared to $10 million in 1992 and
$14 million in 1991. The $8 million decrease in 1993 versus 1992 was primarily
due to lower amounts of cash available for investment. The $4 million decrease
in 1992 versus 1991 was primarily due to lower interest rates and to a lesser
extent to lower amounts of cash available for investment.
 
  Minority Interest in LYONDELL-CITGO Refining Company Ltd. Minority interest
was $5 million in 1993 representing CITGO's allocation of LCR's income.
 
  Income Tax. The effective income tax rate during 1993 from continuing
operations was 73.1 percent compared to 27.3 percent for 1992 and 34.6 percent
for 1991. The difference for 1993, between the effective tax rate and the
federal statutory rate was primarily due to a charge to state deferred taxes
 
                                       20
<PAGE>
 
related to Texas franchise taxes and the unfavorable impact on federal deferred
taxes of the increase in the federal tax rate. The difference for 1992 was
primarily due to a state income tax adjustment, tax exempt income related to
company owned life insurance and tax exempt interest.
 
FINANCIAL CONDITION
 
 Three Months and Six Months Ended June 30, 1994 and 1993
 
  Cash flow from operations for the six months ended June 30, 1994 was $72
million which was net of annual property tax payments of $28 million made in
the first quarter of 1994 and federal income tax payments of $29 million made
in the second quarter of 1994. Cash flows associated with investing activities
during the six months ended June 30, 1994 included capital expenditures of $79
million, of which $29 million was for environmentally related projects and $28
million was for the upgrade project at the Refinery which was contributed by
CITGO, the minority owner. Cash flows associated with financing activities
during the six months ended June 30, 1994 included $36 million of dividend
payments and a net $12 million for debt repayments. On July 22, 1994, the Board
of Directors declared a regular quarterly dividend of $0.225 per share of
common stock, payable September 15, 1994 to stockholders of record on August
12, 1994. Management is currently considering additional capital projects which
could result in a moderate increase over budgeted 1994 capital expenditures.
 
 Years Ended December 31, 1993, 1992 and 1991
 
  Investing Activities. Cash flows associated with investing activities during
1993 included capital expenditures of $60 million, excluding $9 million related
to the Refinery upgrade project, of which $38 million was for environmentally
related projects at the Refinery and the Channelview Complex. During 1992,
capital expenditures were $97 million, of which $57 million was for
environmentally related projects. The 1994 capital expenditures budget,
excluding the Refinery upgrade project, has been set at $90 million. The budget
provides approximately $60 million for refinery projects, $26 million of which
are to be funded by Lyondell according to the terms of the agreement with LCR
and $34 million to be funded from the restricted cash balance which was created
by CITGO's 1993 contributions to LCR. The remaining $30 million is for
petrochemical projects at the Channelview Complex. In addition to the capital
expenditures budget, $150 million of spending in 1994, funded by CITGO, is
planned for the Refinery upgrade project designed to increase the Refinery's
ability to process larger volumes of very heavy Venezuelan crude oil.
 
  As of December 31, 1993, $73 million of cash and $6 million of short-term
investments were restricted for use in LCR capital projects, including the
Refinery upgrade project and other expenditures as determined by the LCR
owners.
 
  Financing Activities. Cash flows associated with financing activities during
1993 included $108 million of dividend payments, $29 million for scheduled
repayments of medium-term notes and $4 million of net proceeds from short-term
debt.
 
  In December 1993, the Company completed a five-year, $400 million revolving
Credit Facility with a group of banks, representing an increase in amount and
term compared to the Company's previous $300 million bank credit facility,
which was scheduled to terminate in July, 1994. Borrowings under the new Credit
Facility bear interest based on Euro-Dollar, CD or prime rates, at the
Company's option. The facility is available for working capital and general
corporate purposes as needed. This Credit Facility contains covenants relating
to dividend payments, debt incurrence, liens, disposition of assets, mergers
and consolidations, fixed charge and leverage ratios and certain investments in
LCR. At December 31, 1993, no amounts were outstanding under this Credit
Facility. See Note 11 of "Notes to Consolidated Financial Statements."

                                       21
<PAGE>
 
  During 1993, all of the $108 million of dividend payments exceeded earnings
and profits in 1993, as computed for federal income tax purposes subject to
final determination by the Internal Revenue Service, and will be considered a
return of capital to all stockholders. See Note 13 of "Notes to Consolidated
Financial Statements."
 
ENVIRONMENTAL MATTERS
 
  Various environmental laws and regulations impose substantial requirements
upon the operations of the Company. The Company's policy is to be in compliance
with such laws and regulations, which include, among others, the Comprehensive
Environmental Response, Compensation and Liability Act of 1980 ("CERCLA"), as
amended, the Resource Conservation and Recovery Act ("RCRA") and the Clean Air
Act and Clean Air Act Amendments of 1990. ARCO, along with many other
companies, has been named a potentially responsible party ("PRP") under CERCLA
in connection with the past disposal of waste at third party waste sites. The
Company may have an obligation to reimburse ARCO for a portion of the
remediation costs for two of those sites pursuant to a cross-indemnity
agreement. For a discussion of this agreement, see "Relationship with ARCO--
Cross-Indemnity Agreement."
 
  The Company reserves for contingencies, including those based upon unasserted
claims, that are probable and reasonably estimable. In connection with
environmental matters, the Company establishes reserves based upon known facts
and circumstances. Based on current environmental laws and regulations, the
Company believes that it has adequately reserved for the matters described
above and, based upon such reserves, does not anticipate any material adverse
effect upon its earnings, operations or competitive position, although the
resolution in any reporting period of one or more of these matters could have a
material impact on the Company's results of operations for that period.
 
  The environmental reserve on June 30, 1994 was $19 million and included $1
million of estimated advances to ARCO for remediation costs associated with
CERCLA waste disposal sites and $18 million of estimated remediation costs
related to waste disposal sites located within the Company's facilities
associated with RCRA. The Company spent $143,000 during the six months ended
June 30, 1994 and $627,000, $593,000 and $1 million in 1993, 1992 and 1991,
respectively, relating to CERCLA matters. The Company also spent $4,739,000
during the six months ended June 30, 1994 and $2 million, $158,000 and $224,000
in 1993, 1992 and 1991, respectively, in conjunction with RCRA matters. The
Company estimates it will incur an additional $2 million of costs in
conjunction with CERCLA and RCRA matters during 1994, an amount which is
included in the June 30, 1994 environmental reserve.
 
CURRENT BUSINESS OUTLOOK
 
  Lyondell's second quarter and first six months of 1994 results reflect a
petrochemicals business environment which has continued to improve. These
results were partially offset by refining industry conditions which reflect
depressed margins. The effect of the depressed industry margins on LCR was
partially offset by the benefits of LCR's Crude Supply Contract.
 
  Profitability and cash flows for the petrochemical and refining businesses
are affected by market conditions, feedstock cost volatility, capital
expenditures required to meet increasing environmental standards, repair and
maintenance costs, and downtime of production units due to turnarounds.
Turnarounds on major units can have significant financial impact due to the
repair and maintenance costs incurred as well as the associated loss of
production, resulting in lower profitability during the period of the
turnaround. The methanol unit at the Channelview Complex is currently expected
to be shut down for maintenance for approximately six weeks during the third
quarter. In addition, turnarounds on the coker and one of the major crude
distillation units at the Refinery currently are scheduled to begin in October
1994. During these Refinery turnarounds, which are also expected to last
 
                                       22
<PAGE>
 
approximately six weeks, work will be completed to "tie-in" the crude
distillation unit to the upgrade project, thereby avoiding or reducing downtime
of the unit that otherwise would be necessary for the completion of the upgrade
project. However, the timing of such turnarounds may be accelerated or delayed
because of numerous factors, some of which are beyond the Company's control.
 
  Management believes that the low costs and operating flexibility of its
petrochemical business, as well as its large production capacity, position it
to generate higher cash flows if the petrochemical cycle continues to improve.
In the first six months of 1994, the domestic olefins industry operated at
close to maximum available capacity. However, additional capacity scheduled to
come on-stream in 1994 and early 1995 (including one plant that came on stream
during the second quarter of 1994) and rising feedstock prices may negatively
affect future operating rates and margins. Management believes the Company has
significantly improved the outlook for its refining business by forming LCR
which has entered into the Crude Supply Contract and Products Agreement. These
arrangements are designed to diminish the impact of market volatility and
stabilize cash flow at attractive levels relative to historic performance,
although the remaining portion of LCR's crude oil volume continues to be
sensitive to market conditions.
 
  Although the future economic environment cannot be known with certainty, the
Company believes that the cash flow management, cost reduction and other steps
taken during the past two years have positioned it to capitalize on the
improvement in the business environment. Further, the Company believes that
business conditions will be such that cash balances, cash generated from
operating activities and existing lines of credit will be adequate to meet
future cash requirements for scheduled debt repayments, necessary capital
expenditures and to sustain for the reasonably foreseeable future the regular
quarterly dividend. However, the Company continually evaluates its cash
requirements and allocates cash in order to maximize stockholder returns.
 
 

                               ----------------
 
  Management cautions against projecting any future results based on present or
prior earnings levels because of the cyclical nature of the refining and
petrochemical industries and uncertainties associated with the United States
and worldwide economies and United States governmental regulatory actions.
 
                                       23
<PAGE>
 
                               FINANCIAL MATTERS
 
OVERVIEW
 
  The Company's primary financial strategy is to use its cash position and cash
flow to enhance total return to stockholders as determined by stock
appreciation and dividends, while maintaining suitable credit ratings and
appropriate financial liquidity. The Company believes that its ability to
maintain suitable debt ratings, to fund a capital program appropriate to its
asset base, to pay dividends on its Common Stock and to position the Company to
benefit from upturns in the business cycle are critical factors in maximizing
total return to stockholders.
 
  In 1993, as it became apparent that the downturn in petrochemicals would be
broader and more prolonged than previously expected, the Company took action
consistent with the strategies described above to improve its ability to
generate cash flow. These actions included implementation of a cost reduction
program, a reduction of the capital budget and a decrease in the regular
quarterly dividend. These and the other actions, as well as management's
continued commitment to keep working capital at minimal levels, have better
positioned the Company to benefit from an upturn in the business cycle. See
"Managements' Discussion and Analysis of Financial Condition and Results of
Operations--Current Business Outlook."
 
CAPITAL SPENDING
 
  The Company invests discretionary capital in order to improve operating
efficiency, increase production capability in a cost-effective manner, lower
operating costs or upgrade the petrochemical components in its product streams.
A significant portion of the Company's non-discretionary capital spending is
used for projects to improve the health, safety and environmental aspects of
its operations, including compliance with government regulations, and for
replacing capital assets.
 
  Lyondell places major emphasis on finding innovative solutions to improve its
operations without a high level of discretionary capital spending. As one
example of this strategy, in order to take advantage of the strong market for
its petrochemical products and to reduce operating costs, the Company
debottlenecked its two olefins plants and related units in 1989, which
increased the rated ethylene capacity from 2.8 to 3.6 billion pounds per year
and also increased the capacities of certain downstream units at less than half
of the estimated cost of new "grassroots" capacity. Another example of this
strategy is the LCR transaction. The funds contributed to LCR by CITGO (other
than for the upgrade project) are required to be used for capital spending and
other expenditures as determined by the LCR owners, and will substantially
reduce the total capital spending that the Company otherwise would be required
to make in connection with Refinery operations. See "The Company--Refining--LCR
Transaction--Contributions of the Parties."
 
  The petrochemical business capital expenditures totaled $15 million in 1993,
and its capital budget for 1994 is $30 million, of which approximately $3
million is for environmentally-related capital projects. The refining business
capital expenditures (excluding spending on the upgrade project) totaled $45
million in 1993. The refining business capital budget (excluding the upgrade
project) for 1994 is approximately $60 million, of which $48 million is for
environmentally-related capital projects. See "The Company--Environmental
Matters" for a discussion of these environmentally-related capital projects.
Management is currently considering additional capital projects which could
result in a moderate increase in 1994 capital expenditures.
 
  The Company remains obligated to fund certain Refinery environmentally-
related capital projects begun prior to the creation of LCR as well as its
share of ongoing Refinery capital improvements; the total of these obligations
is estimated to be approximately $75 million through the completion of the
upgrade project. The level and timing of these anticipated capital expenditures
will be affected by changes in applicable governmental regulations, including
environmental and tax laws. See "The Company--Refining--LCR Transaction--
Contributions of the Parties."
 
                                       24
<PAGE>
 
  As part of its ongoing operations, the Company periodically conducts
maintenance turnarounds on its facilities, during which capital expenditures
and maintenance expenses as well as lost operating income are typically
incurred. In addition, it may become necessary to shut down units between major
turnarounds in order to perform less extensive maintenance. Such shutdowns were
necessary on the two olefins units at the Channelview Complex during 1993. In
addition to the required repairs, other work was performed during the shutdowns
which is expected to postpone the next major turnaround on the Company's
olefins units. Shutdowns also were necessary on two units at the Refinery
during 1993. The methanol unit at the Channelview Complex is currently expected
to be shut down for approximately six weeks to perform maintenance later this
year. Although turnarounds on principal facilities are usually scheduled well
in advance, the timing of such turnarounds can be accelerated or delayed
because of numerous factors, many of which are beyond the Company's control.
Turnarounds on the coker and one of the major crude distillation units at the
Refinery currently are scheduled to begin in October 1994; however the timing
of such turnarounds may be accelerated or delayed because of numerous factors,
some of which are beyond the Company's control. During these Refinery
turnarounds, work will be completed on the crude distillation unit to "tie-in"
this unit to the upgrade project, thereby preventing or reducing downtime of
the unit that otherwise would be necessary as part of the upgrade project. See
"Certain Investment Considerations--LCR Transaction and Refinery Upgrade
Project--Heavy Crude Oil Processing" and "The Company--Refining--Refining
Feedstocks."
 
LONG-TERM DEBT AND FINANCING ARRANGEMENTS
 
  As of June 30, 1994, the Company had $707 million of long-term debt
consisting of $300 million of notes due 1996 and 1999, $200 million of notes
due 1997 and 2002 and $207 million of medium-term notes due from 1995 to 2005.
 
  The notes due 1996 and 1999 and the medium-term notes contain Put Rights that
would allow the holders to require the Company to repurchase the debt at par
upon the occurrence of certain events combined with specified declines in
public ratings on the notes due 1996 and 1999. Events that may trigger the Put
Rights include, among other things, (i) acquisitions by persons other than ARCO
or the Company of more than 20 percent of the Company's Common Stock, (ii) any
merger or transfer of substantially all of the Company's assets in connection
with which the Company's Common Stock is changed into or exchanged for cash,
securities or other property and (iii) payment of dividends other than regular
dividends. See "Certain Investment Considerations--Potential Restrictions on
Dividend Payments."
 
 Company Unsecured Revolving Credit Facility
 
  During December 1993, the Company executed the Credit Facility, a five year,
$400 million unsecured revolving credit facility that replaced its existing
$300 million credit facility which was due to expire in July 1994. At June 30,
1994, no amounts were outstanding under the Credit Facility.
 
  Under the terms of the Credit Facility, the interest rate for borrowings is
based on Euro-Dollar, CD or prime rates, at the Company's option, and also is
dependent upon the Credit Facility utilization rate and the Company's debt
ratings. The Credit Facility contains restrictive covenants regarding the
incurrence of additional debt, the maintenance of certain fixed charge coverage
and leverage ratios and the provision of contributions to LCR, as well as the
payment of dividends. The Company is currently in compliance with the financial
and other covenants in the Credit Facility. See "Certain Investment
Considerations--Potential Restrictions on Dividend Payments."
 
 LCR Unsecured Revolving Credit Facility
 
  Effective July 1, 1994, LCR entered into a 364-day unsecured $70 million
revolving credit facility with a group of banks, including Continental Bank as
agent. Under terms of the credit facility, LCR may borrow with interest based
on prime, LIBOR or CD rates at LCR's option or have letters of credit
 
                                       25
<PAGE>
 
issued on its behalf. The revolving credit facility may be extended at the
request of LCR upon consent of the bank group. The credit facility contains
covenants that limit LCR's ability to modify certain significant contracts,
dispose of assets or merge or consolidate with other entities. This agreement
replaced a $100 million revolving credit facility with substantially the same
terms which expired on June 30, 1994.
 
 Petrochemical Financing Strategy
 
  Potential funding sources for long-term capital projects, whether involving
transactions with third parties or otherwise, could include, without
limitation, the Company's current financial resources, potential earnings
growth, future borrowings and future issuance of equity securities, as well as
possible contractual arrangements such as joint ventures or partnerships. See
"The Company--Business Strategy." There is no assurance that such funding could
be obtained on terms acceptable to the Company. Both the Company's ability to
undertake and fund its business strategies, and the general level of the
Company's capital commitments and expenditures from period to period, will be
affected by a variety of factors including, without limitation, the general
business environment, as well as changes in applicable government regulations
and tax laws. See "Certain Investment Considerations--Financing Risks;
Potential Dilution."
 
  For a further discussion of the Company's long-term debt and financing
arrangements, see "Management's Discussion and Analysis of Financial Condition
and Results of Operations--Financial Condition" and Note 11 of "Notes to
Consolidated Financial Statements."
 
                                       26
<PAGE>
 
                                  THE COMPANY
 
COMPANY OVERVIEW
 
  Lyondell is a leading manufacturer and marketer of petrochemicals and,
through its interest in LCR, of refined petroleum products. The Company's
corporate headquarters and manufacturing facilities are located in the Houston,
Texas area.
 
  The Company produces a wide variety of petrochemicals, including olefins
(primarily ethylene, propylene and butadiene), polyolefins (low density
polyethylene and polypropylene), methanol, MTBE (methyl tertiary butyl ether)
and aromatics. Lyondell is the largest domestic merchant marketer of ethylene
and propylene, with rated production capacities of 3.6 and 2.1 billion pounds
per year, respectively. Lyondell's petrochemical products are primarily
commodity chemicals that are sold to customers for use in the manufacture of
chemicals, plastics and other synthetic materials. These materials are used, in
turn, to produce a wide variety of consumer goods and industrial products.
 
  The Company's refining business is conducted through its approximate 90
percent interest in LCR, which operates the Refinery. LCR sells the majority of
the gasoline, jet fuel and heating oil it produces to CITGO, which currently
has an approximate 10 percent interest in LCR. LCR also produces fuel oil and
aromatics, as well as lubricants for the transportation, oil drilling and food
processing industries.
 
  Lyondell was originally created by ARCO as a separate division (the "Lyondell
Division") in 1985 through the combination of the operations of the Channelview
Complex and the Refinery. Effective July 1, 1988, ARCO transferred
substantially all the assets and liabilities relating to the integrated
petrochemical and petroleum processing business of the Lyondell Division to a
wholly-owned subsidiary incorporated under the laws of the state of Delaware.
In February, 1990, the Company acquired a polypropylene plant and a low density
polyethylene plant located in Pasadena, Texas (the "Polymers Facility"). On
July 1, 1993 the Company and CITGO announced the commencement of operations of
LCR, a new entity formed and owned by the Company and CITGO in order to own,
operate and upgrade the Company's refining business.
 
  In exchange for the initial transfer of petrochemical and refining assets and
liabilities in 1988, Lyondell issued ARCO additional shares of its Common
Stock, bringing ARCO's stock ownership to 80,000,000 shares, which represented
all of the then outstanding Common Stock. In January 1989, ARCO completed an
initial public offering of shares of Lyondell's Common Stock, and ARCO
currently owns 39,921,400 shares, or 49.9 percent of the outstanding shares.
For information relating to certain continuing relationships and potential
conflicts of interest among Lyondell, LCR and ARCO, including their respective
subsidiaries and affiliates, see "Relationship with ARCO."
 
BUSINESS STRATEGY AND MANAGEMENT PHILOSOPHY
 
  The Company's primary objective is to maximize total return to stockholders
(as measured by stock price appreciation plus dividends). Lyondell's management
believes that in its petrochemical and refining commodity businesses maximizing
free cash flow over the long term is the best means to create value for
stockholders. Lyondell's strategy is to position the Company to capture the
opportunities of the upturns and to minimize the impact of downturns in the
inevitable cycles of its commodity businesses. The Company's assets are managed
to maintain low costs and high operational flexibility and management strives
to quickly identify and capitalize on opportunities to use its operating and
organizational flexibility to improve profitability. Lyondell believes that it
has the lowest cost, most flexible operations among its competitors in the
domestic olefins industry. Through its interest in LCR, the Company is
enhancing the value of its refining business by undertaking a major upgrade of
the Refinery in connection with entering into the long-term Crude Supply
Agreement and the Products Agreement. In both of its businesses, the Company
employs a disciplined approach to capital spending, with discretionary capital
spending focused on high-return projects. See "Financial Matters."
 
                                       27
<PAGE>
 
  Lyondell evaluates, on an ongoing basis, opportunities to expand or diversify
its petrochemical operations through potential acquisitions, joint ventures and
other opportunities involving third parties. The petrochemical industry is
currently experiencing significant merger, acquisition and divestiture
activity, and the Company believes the industry ultimately will be left with
fewer but more competitive participants. Although management does not believe
that the Company will be required to undertake such a transaction in order to
maintain its competitive position, management believes that there may be
opportunities to create incremental cash flow for the Company's petrochemical
business by applying its experience in the efficient and low-cost operation of
the Company's facilities to a larger asset base. Vertical integration with an
ethylene or propylene consumer could increase olefins plant operating rates
during weak market periods by providing captive demand. Horizontal integration
with another olefins producer could improve operating efficiencies by spreading
costs across larger volumes and enhancing operating flexibility. Consistent
with the Company's overall strategy, however, management's intent is to
undertake such a transaction only if it expects that the transaction would
produce both near-term and long-term improved cash flow. While management has
publicly stated the Company's interest in pursuing such transactions, no
assurance can be given with respect to the size, scope, timing or likelihood,
or the financial or business effect of, any possible transaction. See "Certain
Investment Considerations--Financing Risks; Potential Dilution."
 
  Management believes that Lyondell's productive work force, lean
organizational structure and participative management style enable the Company
to quickly identify and take advantage of profit opportunities in rapidly
changing marketplaces. The Company's team-based approach and management style
emphasize low costs, quality, customer satisfaction and the responsibility and
accountability of each employee. In addition, industry studies have shown that
Lyondell's olefins plants have the highest production per plant-level employee
in the industry.
 
  Lyondell also emphasizes superior safety performance in order to safeguard
employees, the community and the Company's assets. Lyondell's safety
performance at the Channelview Complex and the Refinery has been better than
industry averages in each of the past four years, and has improved over that
time period. The recordable incidence rates for the Channelview Complex were
1.69 and 1.39 in 1992 and 1993, respectively, both well below the petrochemical
industry average rate of 3.3 in 1992 (the year of the most recently available
industry data). The LCR recordable incidence rates were 3.9 and 2.8 in 1992 and
1993, respectively, also well below the refining industry average rate of 4.4
in 1992 (the year of the most recently available industry data). Recent
comparative data for the polymers industry is not available, but the Polymer
Facility's recordable incidence rate was 4.4 in 1993, and it has completed
seven and one half years of operations without a lost-workday injury. In 1993,
the Channelview Complex received Star certification for plant safety under the
Voluntary Protection Programs established by the Occupational Safety and Health
Administration ("OSHA"), for which less than one-tenth of one percent of
eligible sites have qualified to date.
 
INDUSTRY OVERVIEW
 
  The manufacture and marketing of petrochemicals is fundamental to many
segments of the economy, including the production of consumer products, housing
components, automotive products and other durable and non-durable goods.
Ethylene is the largest single petrochemical in terms of volume of production
worldwide and is the key building block for a large number of chemicals. With
the wide proliferation of end-use products derived from ethylene during the
past 20 years, especially as plastics have developed into low-cost, high
performance substitutes for a wide range of materials such as metals and paper,
U.S. ethylene consumption has grown by an average annual rate of approximately
four percent.
 
  The supply of and demand for ethylene in the various geographic regions of
the world, and the movement of ethylene and its derivatives between regions,
significantly affects a large segment of the petrochemical business. Foreign
consumption of ethylene derivatives has, on a per capita basis,
 
                                       28
<PAGE>
 
substantially lagged that in the U.S. However, as other regions develop
economically, this gap could narrow.
 
  The petrochemical industry historically has experienced periods of high
demand and high capacity utilization which result in increasingly high
operating margins and profitability. This generally leads to new capacity
investment until supply exceeds demand. The overcapacity in turn leads to
periods of decreasing capacity utilization and declining operating margins
until demand exceeds supply and the cycle is repeated. For example, during the
mid 1980's, olefins capacity increases did not keep pace with demand and, by
1987-1988, domestic producers were operating at high capacity utilization rates
and prices and margins had increased substantially as a result of ethylene
demand growth. Ethylene demand growth peaked at 6.7 percent in 1987 resulting
in average industry operating rates of 97 and 100 percent (of nameplate
capacity), in 1987 and 1988, respectively. The high profitability experienced
by the ethylene industry during this period peaked in early 1989. Over 7.7
billion pounds was added to domestic ethylene capacity from the end of 1989 to
the beginning of 1994 (a 20 percent increase). The additional capacity,
combined with poor overall U.S. and world economic conditions and further
additions to supply in other parts of the world, outpaced ethylene demand
growth and caused the industry to experience a decline in margins. During 1992
and 1993, U.S. industry operating rates were 89 and 92 percent, respectively.
The data in this paragraph with respect to industry operating rates, demand and
capacity is based on reports by Chemical Data, Inc.
 
  Domestic ethylene demand grew at approximately three percent during 1993 and
increased in the fourth quarter, with growth at more than four percent. One new
plant came on line during the second quarter of 1994 and another plant is
scheduled for completion in early 1995. Capacity additions resulting from these
two new plants, along with additional plant expansions, are expected to total
four billion pounds, or 8.6 percent of 1993 domestic industry capacity. No new
additional ethylene plants have been announced for the U.S. after 1995. The
Company estimates that the average length of time to design, obtain necessary
permits for, construct and begin to operate a new ethylene plant on the U.S.
Gulf Coast is approximately four years. See "Certain Investment
Considerations--Uncertain Petrochemical Industry Outlook."
 
  Due to the Company's large ethylene capacity, a small change in ethylene
margin causes a large change in the Company's profitability and cash flow. For
example, assuming that the Company operates at its rated capacity, a one cent
per pound annual increase in ethylene margins can result in a $36 million
annual increase in the Company's pre-tax operating income. The Company's other
major commodity chemical products all experience cyclical market conditions
similar to (although not necessarily coincident with) those of ethylene. As a
producer of olefins primarily for the merchant market, Lyondell may experience
greater variations in its sales volumes and profitability when industry supply
and demand relationships are at extremes in comparison to more integrated
competitors, i.e., those with a higher proportion of captive demand for olefins
derivatives production. In 1993 the Company sold approximately 90 percent of
its ethylene and propylene production into the merchant market.
 
  The refining business tends to be volatile as well as cyclical. Crude oil
prices, which are impacted by worldwide political events and the economics of
exploration and production in addition to refined products demand, are the
largest source of this volatility. Demand for refined products is influenced by
seasonal and short-term factors such as weather and driving patterns, as well
as by longer term issues such as energy conservation and alternative fuels. The
refined products supply is also dependent on industry operating capabilities
and on long-term refining capacity trends. Among LCR's refining competitors are
major integrated petroleum companies that have their own raw material resources
and, in many cases, downstream markets, both of which tend to decrease the
impact of business cycles on these competitors' sales volumes and
profitability.
 
  Although 1990 and 1991 were generally viewed as good years for the refining
industry, industry profitability returned to lower levels beginning in 1992.
Although apparent demand for refined products has shown a slight increase
consistent with growth in the overall economy, supply has been more than
adequate to meet this demand. Capacity increases have occurred in the form of
debottlenecks to
 
                                       29
<PAGE>
 
conversion units and additional oxygenate capacity, including new MTBE plants,
which have added to gasoline supply. To date, this has more than offset the
declines in industry crude oil distillation capacity, which are beginning to
occur as smaller, less efficient plants are shut down. The resulting lower
refining profitability has been more evident for merchant refiners, who do not
have retail outlets for their products.
 
PETROCHEMICALS
 
  The Company believes, based on the most recently available ethylene industry
survey by Solomon Associates, Inc. (which used 1991 data), that it is the
lowest cost producer of ethylene in the U.S. industry. Factors contributing to
the Company's low-cost position include flexibility in feedstock supply and
product output, integration of manufacturing, storage and transportation
facilities and the ability to upgrade by-product streams.
 
 Petrochemical Products
 
  The Company's olefins plants and related processing units produce ethylene,
propylene, butadiene, butylenes, benzene, toluene, hydrogen and certain
specialty products, such as isoprene, dicyclopentadiene, piperylenes and resin
oils along with gasoline blendstocks and heavy liquid fuels. The Company's
petrochemical products are used by its customers to manufacture intermediate
chemicals for plastics and other synthetic materials that are used in a variety
of consumer and industrial products. The Company also produces methanol and
MTBE.
 
                  PETROCHEMICAL PRODUCTS AND RATED CAPACITIES
 
<TABLE>
<CAPTION>
         PRODUCT                               PRIMARY USES
         -------                               ------------
<S>                        <C>
ETHYLENE                   Polyethylene, ethylene oxide used to produce
Produced at Channelview    ethylene glycol, ethylene dichloride used to produce
Complex. Current rated     polyvinyl chloride, ethylbenzene used to produce
capacity: 3.6 billion      styrene. Major end uses: trash bags, packaging film,
pounds/year.               toys, blow-molded bottles, pipe, anti-freeze,
                           polyester fibers and resins.
PROPYLENE                  Polypropylene, acrylonitrile, propylene oxide. Major
Produced at Channelview    end uses: carpet backing, luggage, high impact
Complex. Current rated     plastics, polypropylene fibers, polyurethane foams,
capacity: 2.1 billion      cleaning compounds and coatings.
pounds/year (excludes
product flexibility
unit).
BUTADIENE                  Styrene butadiene rubber (SBR), ABS copolymer
Produced at Channelview    (acrylonitrile butadiene styrene). Major end uses:
Complex. Current rated     rubber for tires, hoses, surgical gloves (SBR),
capacity: 615 million      high-impact plastics (ABS).
pounds/year.
AROMATICS                  Benzene: styrene, phenol nylon.
Benzene and toluene        Toluene: octane enhancers, benzene production,
produced at Channelview    urethane chemicals. Major end uses: plastics, rubber
Complex. Benzene current   markets, fibers for carpet and apparel, polyurethane
rated capacity: 90         foams for seat cushions, gasoline.
million gallons/year.
Toluene current rated
capacity: 40 million
gallons/year.
SPECIALTY PRODUCTS         Various types of hydrocarbon resins and unsaturated
Dicyclopentadiene (DCPD),  polyester resins. Major end uses: inks, adhesives,
LRO (Lyondell resin oil),  paints and varnishes, rubber market, fiberglass
piperylenes, isoprene      products.
produced at Channelview
Complex. Total current
rated capacity: 388
million pounds/year.
METHANOL                   MTBE, formaldehyde, acetic acid. Major end uses:
Produced at Channelview    gasoline, adhesive resins, textiles, paints,
Complex. Current rated     coatings.
capacity: 233 million
gallons/year.
MTBE                       Blending component for oxygenated gasoline.
Produced at Channelview
Complex. Current rated
capacity: 167 million
gallons/year.
LOW DENSITY POLYETHYLENE   Trash bags, packaging film, toys, housewares, paper
Produced at Polymers       coatings.
Facility. Current rated
capacity: 140 million
pounds/year.
POLYPROPYLENE              Plastics for auto parts, household products, carpet
Produced at Polymers       backing, fibers, films.
Facility. Current rated
capacity: 300 million
pounds/year.
</TABLE>
 
                                       30
<PAGE>
 
 Petrochemical Marketing and Product Distribution
 
  Lyondell sells substantially all of its olefins products to long-term
customers. Sales are made pursuant to written agreements, which typically
provide for monthly negotiations of prices based upon then current market
prices. Contract volumes are established within a range, and the contracts
generally allow the customer to take up to 10 to 20 percent less than the
maximum contract commitment. The terms of these contracts are fixed for a
period (typically three to five years), although earlier terminations may occur
if the parties fail to agree on price and deliveries are suspended for a period
of several months. In some cases, these contracts also contemplate extension of
the term unless specifically terminated by one of the parties.
 
  The Company sells substantially all of its methanol output and the majority
of the benzene volumes under long-term contracts having terms similar to those
contained in the olefins contracts. A significant portion of the Company's
benzene production is sold under contract to ARCO Chemical at market-based
prices. See "Relationship with ARCO." Lyondell licenses MTBE technology from
ARCO Chemical and sells MTBE produced at one of its two units to ARCO Chemical
at market-based prices. The production from the second unit is tolled for LCR
for gasoline blending.
 
  Ethylene and propylene are shipped or exchanged via a comprehensive pipeline
system which has connections to numerous Gulf Coast ethylene and propylene
consumers. The pipeline system is owned by ARCO Pipe Line Company, and
substantially all of it is leased by the Company under a long-term lease. See
"--Facilities and Properties" and "Relationship with ARCO--Agreements Between
the Company and ARCO Pipe Line Company." The Company has exchange agreements
with other olefins producers which allow access to customers who are not
directly connected to the pipeline system. Butadiene, methanol, aromatics and
other petrochemicals are distributed by one or more of the following means:
pipeline, railcar, truck or barge.
 
 Feedstock Flexibility
 
  The primary feedstocks used in the production of ethylene are natural gas
liquids feedstocks (ethane, propane and butane, collectively "NGLs") and
petroleum liquids. However, olefins plants with the flexibility to consume a
wide range of feedstocks are better able to maintain higher levels of
profitability during periods of changing energy and petrochemical prices than
olefins plants that are restricted in their feedstock processing capability.
Prior to the mid 1970s, the feedstocks used at most ethylene plants in the
United States consisted predominantly of NGLs. As of July 1, 1994,
approximately 44 percent of domestic ethylene plant capacity was limited to NGL
feedstocks, and the remaining approximately 56 percent could process to some
extent both NGLs and petroleum liquids feedstocks.
 
  Management believes that the Channelview Complex has the highest degree of
feedstock flexibility in the domestic industry, and management continuously
evaluates both the optimum use of the Company's current feedstock flexibility
and opportunities to increase its capacity to process low-cost feeds. The
Channelview olefins units are capable of processing not only 100 percent
petroleum liquids feedstocks (for which the plants were originally designed)
but also up to 90 percent NGLs. Liquid feedstocks have had a significant
historical margin advantage over ethane and propane, with an average light
naphtha to ethane variable cost advantage over the last five years of three
cents per pound of ethylene. The industry margin differential between these
feedstocks has been typically between one and four cents per pound of ethylene.
The Company has the capability to capture this differential due to its
feedstock flexibility. Lyondell is one of only five U.S. producers that has the
ability to process a full range of liquid feedstocks through light vacuum gas
oil. The factors described above historically have given the Company a
competitive advantage that has contributed to the Company's low operating
costs.
 
  The Company obtains a portion of its petroleum liquids requirements from the
Refinery (primarily naphtha and gas oil), a portion of its petroleum liquids
requirements in the form of petroleum condensates pursuant to a contract with a
foreign government affiliate, and the remainder of its
 
                                       31
<PAGE>
 
petroleum liquids requirements under short-term contracts or on the spot market
from a variety of foreign and domestic sources. The Company purchases NGLs from
a wide variety of domestic sources, many of which have storage facilities in
the Mont Belvieu area.
 
  The Company consumed an average of 186 million standard cubic feet per day of
natural gas in 1993 for use as fuel in its operations at the Refinery and the
Channelview Complex and as feedstock for its methanol plant. The Channelview
Complex is connected to a diverse natural gas supply network, which provides
the Channelview Complex with a choice of natural gas suppliers (including
producers) at competitive prices. During 1993, the Company's natural gas costs
averaged $0.27 less per thousand cubic feet than the published Texas Average
Industrial Price, resulting in $18.3 million of savings. If NGLs or residual
oils are more favorably priced than natural gas, the Company substitutes them
for natural gas in some applications in order to lower its average fuel costs.
The primary feedstock and fuel used in the methanol plant is natural gas,
although the plant has the flexibility to process NGL feedstocks as well.
 
 Product Flexibility
 
  The Company has the flexibility to adjust its product output mix in response
to changing market conditions to capture the highest available margins. The two
major factors contributing to this flexibility are (i) the adjustment of
olefins plants operating conditions and (ii) the product flexibility unit at
the Channelview Complex. The product flexibility unit uses technology licensed
from a third party as well as the Company's patented technology to convert
ethylene and other light petrochemical streams into propylene. Improvements to
this unique unit in 1993 included a doubling of capacity, so that the unit
currently is designed to produce one billion pounds per year of propylene in
addition to the Company's base capacity of 2.1 billion pounds. Adjustment of
olefins plants operating conditions can result in production of up to an
additional 0.4 billion pounds of propylene with some reduction in ethylene
production.
 
 By-Product Stream Upgrading
 
  Another key component of Lyondell's low-cost position is the Company's
capability to upgrade by-products from its olefins production. At the
Channelview Complex, the Company recovers and sells valuable petrochemical
components contained in a number of intermediate product streams.
 
  The Channelview Complex includes units for butadiene recovery and aromatics
recovery. The Company has further enhanced the value of its product slate by
expanding its capability to recover other high value products. The Channelview
Complex has recovered valuable components such as high purity isoprene,
piperylenes and dicyclopentadiene ("DCPD"), and resin oils from its gasoline
products since 1986. In 1993, the Company increased resin oil capacity by 14
percent and increased piperylenes capacity by 20 percent with debottlenecks and
instrumentation improvements.
 
  The Company plans to utilize its proprietary butylene isomerization
technology, known as ISOMPLUS, to efficiently produce isobutylene from olefins
plant butylene by-product streams. The project, which will start up in the
second half of 1994, includes a MTBE unit debottleneck. See "--Research and
Technology; Patents and Trademarks."
 
                                       32
<PAGE>
 
 Integration
 
  The Company takes advantage of the integration of operations among the
Channelview Complex, the LCR Refinery and the Polymers Facility to capture
additional opportunities to increase profits by upgrading product streams or
providing feedstocks for downstream processes.
 
  The Company and LCR have entered into multiple agreements designed to
preserve much of the synergy between the Refinery and the Channelview Complex.
Economic evaluations at the Channelview Complex and the Refinery are based on
sending products to the highest-value disposition, which may be local use, use
at the other site, or third party sales. Certain refinery products (propane,
butane, low-octane naphthas, heating oils, and gas oils) can be used as
feedstocks for olefins production, and certain Channelview Complex olefins by-
products (pyrolysis gasoline and pyrolysis gas oil) can be processed by the
Refinery into gasoline, jet fuel or heating oil. Butylenes from the LCR
Refinery are tolled through Channelview for the production of alkylate and MTBE
for gasoline blending. Hydrogen from the Channelview Complex is used at the
Refinery for sulfur removal and product stabilization. Ethylene and propylene
produced at the Channelview Complex are used as feedstocks for the Polymers
Facility.
 
                                [Paste up Graph]
 
                                       33
<PAGE>
 
REFINING
 
  Through its interest in LCR, the Company is undertaking a major upgrade
project at the Refinery in connection with securing a long-term supply of crude
oil and a long-term arrangement to sell its light refined products. Management
believes that this strategic initiative will stabilize cash flow from the
refining business and reduce the Company's exposure to market volatility. See
"--LCR Transaction" and "Certain Investment Considerations--LCR Transaction and
Refinery Upgrade Project."
 
 Refined Products
 
  The Refinery produces gasoline, heating oil and jet fuel, for sale primarily
to CITGO, aromatics and lube oils (white oils, industrial lubricants, motor
oils and process oils) and certain industrial products for sale to others, and
feedstocks for the Channelview Complex. The Refinery's aromatics recovery unit
produces benzene, toluene, paraxylene and orthoxylene which are marketed by the
Company. Benzene and toluene also are produced at the Channelview Complex.
 
  The Refinery has a crude distillation rated capacity of 265,000 barrels per
day. In 1993, the Refinery produced approximately 293,000 barrels per day of
total products.
 
  The following table shows the typical ranges of production for the Refinery's
principal products based on 1993 actual production. It is not possible to
produce the maximum amount of all products at the same time. Specific product
mix (and thus production volume) is dependent on feedstock type and operating
conditions, which are selected based on market conditions.
 
<TABLE>
<CAPTION>
                                                                    TYPICAL
      PRODUCT                                                      PRODUCTION
      -------                                                   ----------------
                                                                  (BARRELS PER
                                                                      DAY)
      <S>                                                       <C>
      Gasoline................................................. 80,000 - 120,000
      Heating Oil.............................................. 35,000 -  70,000
      Jet Fuel/Kerosene........................................ 10,000 -  35,000
      Lube Oils................................................  3,000 -   7,000
</TABLE>
 
  The Refinery has maintained a low-cost position in the best one-third of the
domestic industry, according to the two most recent refining industry surveys
by Solomon Associates, Inc. The Refinery's flexibility to process a wide range
of crude oils as well as its access to numerous sources of crude oil are
important factors in maximizing the margins of its cracking operations. The
Refinery also has the capability to produce lubricants and aromatics, process
purchased intermediates such as fluid and reformer feed, and produce oxygenated
gasoline and other specialty products when market conditions are favorable.
 
 Marketing and Product Distribution
 
  CITGO purchases gasoline, heating oil and jet fuel from LCR under the long-
term Products Agreement at market-based prices. See "--LCR Transaction--
Products Agreement." Lube oils are manufactured and sold directly to end
consumers and to distributors throughout the United States and international
markets. Aromatics produced at the Refinery are marketed on LCR's behalf by
Lyondell.
 
                                       34
<PAGE>
 
 LCR Transaction
 
  Overview. Management believes that the LCR transaction, entered into in July
1993, accomplishes the Company's strategy for the refining business by
significantly upgrading the quality of the refining assets and securing an
economically favorable long-term supply of crude oil while reducing the
exposure of the refining business to market volatility. The LCR transaction is
expected to stabilize cash flow from the refining business at attractive levels
relative to historic performance. Major components of the LCR transaction
include:
 
  . An upgrade project to increase heavy crude oil processing capability;
 
  . Asset contributions by the Company, cash contributions by CITGO and the
    resulting ownership positions;
 
  . A long-term crude supply contract for heavy Venezuelan crude oil; and
 
  . A long-term product arrangement to sell light products to CITGO.
 
  Prior to completion of the upgrade project, the keys to operational success
for LCR will be (i) to maximize the amount of heavy Venezuelan crude oil
processed in the coking mode, (ii) to optimize the efficient utilization of the
remaining cracking capacity, and (iii) to maintain an overall focus on low-cost
operations. See "--Refining Feedstocks." Heavy (22 degree API gravity)
Venezuelan crude oil is supplied pursuant to the Crude Supply Agreement, which
is intended to stabilize cash flow from this portion of the refinery. Prior to
completion of the Refinery upgrade project, when the full benefits of the
upgrade and the Crude Supply Agreement should be realized, the margins realized
from the remaining crude processed at the Refinery in a cracking mode will
continue to be subject to the volatile refining business environment. The
Refinery's low cost, flexibility and access to numerous sources of crude oil
supply continue to be important factors in maximizing margins on this portion
of the Refinery's operations. See "Certain Investment Considerations--LCR
Transaction and Refinery Upgrade Project."
 
  Upgrade Project. LCR is undertaking a major upgrade project at the Refinery
to enable the facility to process substantial additional volumes of very heavy
crude oil. Project engineering for the upgrade is currently underway. The
upgrade project, which is subject to regulatory approvals and the resolution of
certain other matters, is intended to increase the heavy crude oil processing
capability of the Refinery from approximately 130,000 barrels per day of 22
degree API gravity crude oil to approximately 200,000 barrels per day of 17
degree API gravity Venezuelan crude oil in a coking mode. The upgrade is not
intended to increase the total throughput of the Refinery, but rather its
ability to process heavier, higher margin crude oils. The project also will
include expansion of the Refinery's reformulated gasoline capability and the
addition of low sulfur diesel production capability. Major components of the
upgrade include new coking, hydrotreating and sulfur recovery units; a new
crude distillation unit and modifications to the Refinery's largest existing
crude distillation unit and various hydrodesulfurization units.
 
  The cost of the upgrade project, based on the detailed engineering completed
to date, currently is estimated to be approximately $830 million. In addition,
LCR has estimated a 15 percent ($125 million) allowance for contingency costs,
which would increase the total project cost estimate to approximately $955
million. The final cost of the project will be influenced by numerous factors,
many of which are beyond LCR's control, including the timing and terms of
necessary construction, operating and regulatory permits, as well as
construction schedule delays whether caused by adverse weather conditions,
material shortages, labor disputes or otherwise.
 
  Following the upgrade, the earnings potential of the Refinery is expected to
be enhanced because of the higher margins expected to be associated with the
resulting heavier crude oil mix and the
 
                                       35
<PAGE>
 
Refinery's increased coking capability, enhanced reformulated fuel and low
sulfur diesel production capability and other yield improvements.
 
  Contributions of the Parties. Pursuant to agreements between the Company and
CITGO (and their affiliates), the Company contributed its refining business and
refining working capital to LCR in July 1993. CITGO contributed $100 million to
LCR in 1993 (excluding its contribution towards the upgrade project described
below) giving it an approximate 10 percent interest in LCR. Prior to the in-
service date for the upgrade project, CITGO is required to reinvest its share
of LCR's operating cash flow and thereby increase its interest in LCR. These
contributions by CITGO will be used for ongoing LCR capital projects, other
than (i) the upgrade project and (ii) certain Refinery environmental capital
projects for which liability has been retained by the Company and that the
Company will fund with cash contributions. Any additional ongoing LCR capital
requirements prior to the in-service date (for purposes other than the upgrade
project) will be funded substantially by Lyondell, primarily in the form of
subordinated loans to LCR. The Company estimates that during 1994 to 1996 its
total contributions to LCR with respect to the capital requirements described
in this paragraph will be approximately $75 million, with a significant portion
of this amount being in the form of subordinated loans to LCR.
 
  Funding for the upgrade project will occur in three phases. The first phase,
the initial $300 million, will be funded by CITGO. As of July 1, 1994, CITGO
had contributed $200 million, including letters of credit and cash, toward this
phase. The second phase is expected to be funded by an LCR borrowing of
approximately $200 million. The third phase (which would be $330 million based
on an estimated $830 million upgrade project cost, and would be $455 million
based on an estimated $955 million upgrade project cost) is anticipated to be
funded (i) 50 percent through an LCR borrowing, (ii) 25 percent through
contributions from CITGO and (iii) 25 percent through subordinated loans from
the Company. Prior to completion of the upgrade project, the financing costs
for the third party borrowings are required to be funded by CITGO. In exchange
for CITGO's upgrade project contributions described above and an additional $30
million cash contribution at the in-service date, CITGO's interest in LCR is
expected to increase to approximately 40 percent effective as of the in-service
date. The timing of the third phase and the level of contributions from the
Company and CITGO will depend on the total cost of the upgrade project and on
LCR's ability to obtain construction financing. See "Certain Investment
Considerations--LCR Transaction and Refinery Upgrade Project--Refinery Upgrade
Project Cost and Potential Delays." In the event that LCR is unable to obtain
construction financing for the refinery upgrade project, the Company and CITGO
each are obligated to fund one-half of the cost of the upgrade project in
excess of $300 million. In turn, CITGO's interest in LCR as of the in-service
date will be dependent upon the actual contributions of CITGO as discussed in
this and the preceding paragraph. CITGO will have a one-time option to increase
its interest in LCR up to 50 percent during the 20-month period following the
in-service date. See "Certain Investment Considerations--LCR Transaction and
Refinery Upgrade Project--Financing of Refinery Upgrade Project and Potential
Limitations on LCR Distributions." Subsequent to the in-service date, Lyondell
will no longer consolidate LCR in its financial statements but will instead
account for LCR as an equity investment.
 
  Crude Supply Agreement. LCR also has entered into the Crude Supply Agreement
with Lagoven. The Crude Supply Agreement requires Lagoven to supply and LCR to
purchase specified quantities of crude oil for 25 years. The contract
incorporates a formula price based on the market value of a slate of refined
products deemed to be produced from each particular crude oil or feedstock,
less: (i) certain deemed operating costs; (ii) certain actual costs, including
crude transportation costs, import duties and taxes; and (iii) a deemed margin,
which varies according to the grade of crude oil or other feedstock delivered.
Deemed margins and deemed costs are adjusted periodically by a formula
primarily based on the rate of inflation. Because deemed operating costs and
the slate of refined products deemed to be produced from a given barrel of
crude oil or other feedstock do not necessarily reflect the actual costs and
yields in any period, the actual refining margin earned by LCR under the
contract will vary depending on, among other things, the efficiency with which
LCR conducts its operations during such period. See "Certain Investment
Considerations--LCR Transaction and Refinery Upgrade Project--Crude Supply
Agreement."
 
                                       36
<PAGE>
 
  Products Agreement. CITGO also has entered into the long-term Products
Agreement with LCR to purchase at market-based prices the full volume of
gasoline, jet fuel and heating oil manufactured at the Refinery following the
expiration of one contract retained by Lyondell. LCR evaluates and determines
the optimal product output mix based on spot market prices and conditions. The
Products Agreement thus provides a secure outlet for the Refinery's products
without imposing an economic penalty caused by production requirements based on
retail outlet needs.
 
  Other Agreements. Effective July 1, 1993, LCR and Lyondell entered into
multiple agreements for feedstock and product sales designed to preserve much
of the synergy between the Refinery and the Company's petrochemical business.
Under the terms of these agreements, various feedstock and product streams will
be transferred between the Refinery and Lyondell's Channelview Complex at
market-related prices. LCR and Lyondell also have entered into tolling
agreements, pursuant to which alkylate and MTBE attributable to Refinery
feedstocks will be produced for LCR at Lyondell's Channelview Complex.
 
  Also effective July 1, 1993, the majority of the employees formerly employed
by Lyondell in its refining business became employees of LCR. Pursuant to the
terms of a number of service agreements, Lyondell has contracted with LCR to
continue to perform services in certain areas, including employee services,
administrative services and marketing services. Lyondell and LCR also have
entered into a variety of contracts providing for the assignment or licensing
of intellectual property rights associated with the refining business.
 
  Management of LCR. LCR is a limited liability company organized under the
laws of the state of Texas, and has pass-through tax characteristics similar to
those of a partnership for federal income tax purposes. The Company owns its
interest in LCR through a wholly-owned subsidiary, Lyondell Refining Company.
CITGO holds its interest through CITGO Refining Investment Company, a wholly-
owned subsidiary of CITGO (together with Lyondell Refining Company, the
"Owners"). The operative agreement with respect to the rights of each of the
Owners and their parent companies is the Amended and Restated Limited Liability
Company Regulations (the "Regulations") of LCR. The Regulations govern
ownership and cash distribution rights. CITGO has committed to reinvest its
share of operating cash flow during the upgrade project which will increase its
interest in LCR. Under the Regulations, the Company has unrestricted access to
its share of operating cash flow from LCR. See "Certain Investment
Considerations--LCR Transaction and Refinery Upgrade Project--Financing of
Refinery Upgrade Project and Potential Limitations on LCR Distributions." The
term of the Regulations is 25 years, although they may be terminated under
certain circumstances, including the insolvency of LCR or either Owner, uncured
material breaches by either Owner or failure to obtain permits for the upgrade
project. Under the terms of a reciprocal Performance Guarantee and Control
Agreement, Lyondell and CITGO each have unconditionally guaranteed the
obligations and performance of their respective Owner under the terms of the
Regulations.
 
  The Regulations provide that LCR is managed by an Owners Committee, which has
three representatives from each Owner. Certain actions require unanimous
consent of the representatives, including, without limitation, amendment of the
Regulations, borrowing money outside of LCR's existing credit facility,
delegation of authority to committees, certain purchase commitments and capital
expenditures in excess of designated amounts. All actions not requiring
unanimous consent can be determined by Lyondell so long as it is the majority
owner. The day-to-day operations of the Refinery are managed by the executive
officers of LCR, including former Lyondell officers with responsibility for
manufacturing and refining operations and refined products marketing. The
results of LCR's operations currently are consolidated into Lyondell's
financial statements.
 
 Refining Feedstocks
 
  The Refinery can process a wide variety of domestic and foreign crude oil
feedstocks, including heavy (low API gravity, high viscosity) and sour (high
sulfur content) crude oils. In addition to 45,000
 
                                       37
<PAGE>
 
barrels per day of light sweet crude oil for lubricants production, the
Refinery can process up to (i) approximately 220,000 barrels per day of light
sour crude oil in a coking mode, or (ii) in the mode in which it currently
operates, approximately 130,000 barrels per day of heavy sour crude oil (22
degree API gravity) primarily in a coking mode plus approximately 80,000
barrels per day of light crude oil in a cracking mode. The upgrade project is
intended to increase the Refinery's processing capability to 200,000 barrels
per day of very heavy Venezuelan crude oil (17 degree API gravity) in a coking
mode.
 
  The Refinery began processing Venezuelan crude oil in the third quarter of
1992. Since that time, the Company and LCR have identified and overcome a
number of obstacles inherent in processing high rates of heavy Venezuelan crude
oil, including making operational changes to the coker and physical
modifications to one of the crude distillation units. These changes increased
the Refinery's capability of running high volumes of heavy Venezuelan crude oil
to approximately 130,000 barrels per day in a coking mode. In the second
quarter the Refinery processed an average of 140,000 barrels per day of heavy
Venezuelan crude oil, with crude oil run in a coking mode limited to 115,000
barrels per day because of coker mechanical problems. The remainder of the
Refinery's capacity currently is used to process lighter crude oils and
feedstocks. See "Certain Investment Considerations--LCR Transaction and
Refinery Upgrade Project--Heavy Crude Oil Processing."
 
  Domestic crude oil is transported to the Refinery primarily by common carrier
pipeline systems. Foreign crude oil is transported by tankers either directly
to the Refinery or to the connecting deepwater terminals at Texas City or on
the Houston Ship Channel.
 
FACILITIES AND PROPERTIES
 
 Channelview Petrochemical Complex
 
  The Channelview petrochemical complex, located on an approximately 2,900 acre
site in Channelview, Texas, 20 miles east of Houston, includes two large
olefins plants, two MTBE units, a methanol plant, a butadiene recovery unit, a
product flexibility unit, an aromatics (benzene and toluene) recovery unit, an
isoprene recovery unit, a DCPD recovery unit, a piperylenes recovery unit, an
alkylation unit and other petrochemical processing units. This complex is
connected by pipeline systems to Lyondell's salt dome storage facility at Mont
Belvieu, Texas, which has approximately 10 million barrels of storage capacity
for NGL feedstocks and for the Company's ethylene and propylene production. The
Channelview Complex also is connected by pipeline systems to the LCR Refinery,
which is approximately 16 miles away and provides a portion of the petroleum
liquids feedstock requirements for the Channelview Complex. See "--Other
Properties."
 
  The combined rated capacity of the two olefins plants at January 1, 1994 was
approximately 3.6 billion pounds of ethylene per year or approximately 7.7
percent of total domestic production capacity. Based on published rated
production capacities, the Company believes it is one of the five largest
producers of ethylene in the United States. Of the total ethylene production
capacity in the United States, approximately 93 percent is located along the
Gulf Coast, and approximately 77 percent is owned by ten manufacturers.
 
  Lyondell licenses MTBE technology from ARCO Chemical and sells MTBE produced
at one of its two units to ARCO Chemical at market-based prices. The production
from the second unit is tolled for LCR for gasoline blending. The Channelview
Complex also includes an isopropyl alcohol ("IPA") unit, which the Company uses
for the manufacture of IPA for ARCO Chemical. See "Relationship with ARCO--
Agreements Between the Company and ARCO Chemical Company."
 
 Polymers Facility
 
  The Polymers Facility, located on approximately 200 acres in Pasadena, Texas,
converts propylene and ethylene supplied by the Channelview Complex into
polypropylene and low density polyethylene that is sold into the derivative
markets and transported by railcar and truck. The Polymers Facility is
connected by pipeline systems to the Company's Mont Belvieu, Texas storage
facility for feedstock supply.
 
                                       38
<PAGE>
 
 LCR Refinery
 
  The LCR Refinery, located on an approximately 700 acre site alongside the
Houston Ship Channel, currently includes a coker, a fluid catalytic cracking
unit, three reformers, four crude distillation units, two sulfur recovery
plants and several hydrodesulfurization units, as well as lube oil
manufacturing and packaging facilities and an aromatics recovery unit. The
upgrade project will include new coker, hydrotreater, sulfur recovery and crude
distillation units, as well as modifications to the largest existing crude
distillation unit and various hydrodesulfurization units. The Refinery is
connected by pipeline to the Channelview Complex and provides feedstocks to and
receives by-products from that complex.
 
  Historically, the Refinery has operated in a "full conversion" mode,
processing the heaviest portion of crude oil through the coker unit without
producing lower-value residual fuel. The Refinery currently produces residual
fuel as a result of processing the heavy Venezuelan crude oil. The upgrade
project will enhance the Refinery's conversion capability so that very heavy 17
degree API gravity Venezuelan crude oil can be processed in a full conversion
mode.
 
 Other Properties
 
  In addition to the real property, plant and equipment that comprise its
Channelview Complex and the real property, plant and equipment which comprise
the Polymers Facility, Lyondell owns several pipelines connecting the
Channelview Complex, the Refinery and the Mont Belvieu storage facility,
including six lines used to transport heavy liquid feedstocks, butylenes,
benzene, hydrogen, butane, MTBE and unfinished gasolines between the
Channelview Complex and the Refinery. Lyondell also owns the storage facility,
a brine pond facility and a tract of vacant land at Mont Belvieu, Texas.
Storage capacity for up to 10 million barrels of NGL feedstocks, ethylene,
propylene and butylenes is provided in salt domes at the Mont Belvieu facility.
The Company also owns an approximate 10 percent undivided joint interest in
much of the real property surrounding the Mont Belvieu site which is maintained
as a greenbelt for these facilities. The Company has a lease on product
pipelines from Mont Belvieu to most olefins customers. See "Relationship with
ARCO--General" and "--Agreements Between the Company and ARCO Pipe Line
Company."
 
  In addition to the real property, plant and equipment which comprise the
Refinery, LCR also owns the real property, plant and equipment which comprise a
lube oil blending and packaging plant in Birmingport, Alabama. LCR owns a
pipeline and utilizes another pipeline to transport refined products from the
Refinery to the GATX Terminal to interconnect with common carrier pipelines.
 
RESEARCH AND TECHNOLOGY; PATENTS AND TRADEMARKS
 
  The Company maintains a small, focused research and development effort that
builds on the Company's strengths and existing businesses. Recent efforts have
concentrated on Lyondell's position in butylenes. In 1992, the Company
introduced a new technology called ISOMPLUS for producing low-cost isobutylene
by isomerizing normal butylenes. Management believes that ISOMPLUS will play an
important role in the next increments of capacity that the industry will need
to supply the growing MTBE demand in reformulated gasoline. Lyondell is seeking
to take advantage of this opportunity by commercializing the technology through
a joint development and licensing relationship with CDTECH, a joint venture
that is a leading supplier of ethers technologies used in reformulated fuels
production. The arrangement with CDTECH is intended to commercialize two
isomerization processes that produce blending agents for cleaner burning
gasolines. If successful, the alliance is expected to accelerate worldwide
commercialization of Lyondell's butene isomerization process. Research efforts
are continuing on a similar technology to produce isoamylene, a feedstock used
to produce TAME, another oxygenate used in the production of reformulated
gasoline. The Company also has product development efforts aimed at tailoring
products to meet specific customer needs, especially in such areas as resins,
fibers, adhesives and sealants.
 
                                       39
<PAGE>
 
  The Company, including LCR, uses numerous patents in its operations, many of
which are licensed from third parties, including ARCO. See "Relationship with
ARCO." Although the Company's licenses from ARCO and others are significant to
its operations, the Company is not dependent upon any particular patent, trade
secret or the like, and it believes that the loss of any individual patent,
trade secret, or similar proprietary right would not have a material adverse
effect on the operations of the Company. The Company submitted several new
patent applications during 1993 to protect processes it developed.
 
  The Company, including LCR, uses numerous trademarks in its marketing
operations, a portion of which are licensed from third parties, including ARCO.
The Company is not dependent upon any particular trademark, and it believes the
loss of any individual trademark would not have a material adverse effect on
its operations. The Company submitted several new trademark applications during
1993 to protect product line names and to foster its marketing position.
 
ENVIRONMENTAL MATTERS
 
 General
 
  The Company's production facilities generally are required to have permits
and licenses regulating air emissions, discharges to water and generation,
storage, treatment and disposal of hazardous wastes. Companies that are
permitted to treat, store or dispose of hazardous waste and maintain
underground storage tanks pursuant to RCRA also are required to meet certain
financial responsibility requirements. The Company believes that it has all
permits and licenses generally necessary to conduct its business or, where
necessary, is applying for additional, amended or modified permits, and that it
meets applicable financial responsibility requirements.
 
  The Company's policy is to be in compliance with all applicable environmental
laws. The Company is committed to Responsible Care(R), a chemical industry
initiative to enhance the industry's responsible management of chemicals. The
Company (together with the industry in which it operates) is subject to
extensive federal, state and local environmental laws and regulations
concerning emissions to the air, discharges onto land or waters and the
generation, handling, storage, transportation, treatment and disposal of waste
materials. Some of these laws and regulations are subject to varying and
conflicting interpretations. In addition, the Company cannot accurately predict
future developments, such as increasingly strict requirements of environmental
laws, inspection and enforcement policies and compliance costs therefrom, which
might affect the handling, manufacture, use, emission or disposal of products,
other materials or hazardous and non-hazardous waste. For example, a revised
testing procedure under RCRA that became effective in 1990, the toxicity
characteristic leachate procedure ("TCLP"), resulted in the reclassification of
some wastes at the Company's facilities which has required changes in the
Company's waste management practices. These changes have caused the Company to
make expenditures in 1993 and will cause the Company to make substantial
additional expenditures in 1994. In addition, in April 1994, new regulations
relating to emission standards for a large number of petrochemicals such as
methanol, butadiene and toluene, were announced by the Environmental Protection
Agency ("EPA"). The Company is in the process of analyzing the impact that
these new regulations will have on its petrochemical business. Some risk of
environmental costs and liabilities is inherent in particular operations and
products of the Company, as it is with other companies engaged in similar
businesses, and there is no assurance that material costs and liabilities will
not be incurred. With respect to the capital expenditures and risks described
above, however, the Company does not expect that it will be affected
differentially from the rest of the domestic petrochemical and refining
industry.
 
  In some cases, compliance with environmental, health and safety laws and
regulations require capital expenditures. In the years ended December 31, 1992
and 1993, the Company spent approximately $57 million and $38 million,
respectively, for environmentally-related capital expenditures at existing
facilities. For 1994 and 1995, the Company currently estimates that
environmentally-related capital expenditures at existing facilities (including
the Refinery) will be approximately $51 million and $50 million, respectively.
The timing and amount of these expenditures are subject to the regulatory
 
                                       40
<PAGE>
 
and other uncertainties described above as well as obtaining of the necessary
permits and approvals. The Company's 1994 capital budget includes the following
environmentally-related projects: (1) work on installation of a wet gas
scrubber that will reduce sulfur dioxide and particulate emissions from the
Refinery's fluid catalytic cracking unit; (2) TCLP-related projects at the
Refinery; (3) completion of a number of projects to reduce benzene emissions in
compliance with federal regulations; (4) a marine vapor recovery project at the
Refinery; and (5) compliance costs at the Channelview Complex and the Refinery
related to nitrogen oxide emissions from combustion sources. Additional
projects may be required as a result of various enforcement orders that the
Company is negotiating with the appropriate regulatory authorities. For periods
beyond 1995, additional environmentally related capital expenditures will be
required, although the Company cannot accurately predict the levels of such
expenditures at this time.
 
  The Refinery contains on-site solid-waste landfills which were used in the
past to dispose of waste, and it is anticipated that corrective actions will be
necessary to comply with federal and state requirements with respect to this
facility. In addition, the Company negotiated an order with the Texas Water
Commission, now the Texas Natural Resource Conservation Commission (the
"TNRCC"), for assessment and remediation of groundwater and soil contamination
at the Refinery. The Company has reserved an amount (without regard to
potential insurance recoveries or other third party reimbursements) it believes
to be sufficient to cover current estimates of the cost for remedial measures
at its manufacturing facilities based upon its interpretation of current
environmental standards. Based on the establishment of such reserves, and the
status of discussions with the applicable regulatory agencies, and although the
reserves are subject to increase, the Company does not anticipate any material
adverse effect upon its earnings, operations or competitive position as a
result of compliance with the laws and regulations described in this or the
preceding paragraphs. See also "Legal Proceedings--Claims Relating to Waste
Disposal Sites."
 
 Audit Committee Report Regarding Alleged Violations of Certain Environmental
Laws
 
  From April 1993 to June 1994, two process waste water streams at the
Channelview Complex were not in compliance with applicable Benzene National
Emissions Standard for Hazardous Air Pollutants ("NESHAPS") regulations. In
response to an employee's allegations, described further below, regarding this
situation, the Board of Directors directed the Audit Committee of the Board
(the "Audit Committee"), which is composed of the four directors of the Company
who are not affiliated with either the Company or ARCO, to conduct an
independent investigation regarding the compliance status of the process waste
water streams and the issues raised by the employee's statements. The
investigation by the Audit Committee and its independent legal counsel was
conducted during the month of June and involved interviews of over 50 Company
employees and the review of more than 10,000 document pages. The Audit
Committee has issued a report to the Board concerning the results of its
investigation.
 
  The investigation highlighted the following events:
 
    . As of April 7, 1993 two process waste water streams at the Channelview
  Complex were not in compliance with applicable Benzene NESHAPS regulations
  which generally require that process waste water streams containing
  concentrations of benzene in excess of 10 parts per million be
  "controlled"--i.e., treated, recycled, deep well injected or otherwise
  isolated from the open air;
 
    . On April 7, 1993 the Company submitted a report to the TNRCC that
  affirmatively and incorrectly indicated that the streams were controlled in
  accordance with the Benzene NESHAPS regulations. The Company also filed a
  subsequent report with the TNRCC on April 7, 1994. While the April 1994
  report did not repeat the assertion that the streams were controlled in
  compliance with the Benzene NESHAPS regulations, it also did not
  specifically state that the streams were out of compliance;
 
                                       41
<PAGE>
 
    . After learning that the process waste water streams were not controlled
  in accordance with the Benzene NESHAPS regulations, Company employees
  determined that the streams did not create a discernible impact on health
  or safety and began working on compliance solutions;
 
    . After the development of compliance solutions was substantially
  underway, on and after May 20, 1994, a senior employee in the Company's
  legal department made several written and oral statements to the Company's
  executive management and the Board with respect to the compliance status of
  the process waste water streams and the accuracy of the related reports.
  The employee also made a number of statements regarding alleged conduct by
  the Company's management with respect to compliance with environmental
  laws, allegations regarding the commitment of the Company's management to
  compliance with applicable environmental laws and the general effectiveness
  of the Company's environmental processes;
 
    . On May 20, 1994, the Company notified the TNRCC that the two streams
  were not controlled in accordance with the Benzene NESHAPS regulations, and
  shortly thereafter the Company also notified the EPA, which has oversight
  of the Clean Air Act compliance program supervised by the TNRCC, and the
  Department of Justice; and
 
    . After May 20, 1994, efforts to implement a compliance solution for the
  two process waste water streams were expedited. Compliance was achieved for
  both streams by June 7, 1994 using an interim solution.
 
The Company estimates that the capital costs incurred in achieving a permanent
compliance solution will be approximately $1,000,000.
 
  The Audit Committee's report to the Board and the results of the
investigation include the following conclusions:
 
    . Treating the Company's Benzene NESHAPS experience as a test of the
  Company's environmental commitment, the overall record evidences the
  Company's willingness to incur substantial cost and inconvenience in order
  to meet its stated goal of wholehearted compliance with environmental laws;
 
    . The Company intended all waste water streams to be controlled in
  compliance with the Benzene NESHAPS regulations, and the omission of the
  two waste water streams was an oversight due to a series of
  miscommunications and organizational failures and not a deliberate
  violation;
 
    . According to the Company's routine monitoring of employees, the fact
  that the streams were not controlled in accordance with the Benzene NESHAPS
  regulations did not result in employee exposures above the health and
  safety standards for benzene exposure set by OSHA. Furthermore, there is no
  evidence that the process waste water streams at issue caused exposure of
  the general public to benzene concentrations which were in excess of levels
  established by applicable regulations. In fact, both monitoring by Lyondell
  and an independent third party showed benzene levels far below maximum
  permissible levels;
 
    . Once the compliance issue with respect to the two process waste water
  streams had been clearly defined, the Company's actions were consistent
  with an intent to find and implement a permanent solution as quickly as it
  reasonably could. The problem was neither ignored nor covered up;
 
    . There is no evidence that anyone was aware that the April 1993 report
  was incorrect as filed. Although certain lower and middle management
  employees became aware that the process waste water streams were not
  controlled just prior to the submission of the April 1994 report, that fact
  was not understood by the officer signing the April 1994 report; and
 
    . There is no basis to support a generalized allegation that the
  Company's senior management knowingly conceals or tolerates environmental
  compliance problems.
 
  In connection with its report to the Board, the Audit Committee has
recommended that the Company's senior management address certain organizational
and managerial issues to ensure that
 
                                       42
<PAGE>
 
there is no recurrence of the kinds of oversights that occurred in connection
with the Benzene NESHAPS situation.
 
  On June 6, 1994, the Company received a Notice of Violation from TNRCC
regarding the two uncontrolled process waste water streams. In an initial
enforcement conference the TNRCC has indicated that it intends to proceed with
an administrative enforcement action, and the Company expects that the TNRCC
will impose an administrative fine. Noncompliance with the Benzene NESHAPS
regulations and the related reporting requirements can result in civil
penalties and, under certain circumstances, substantial civil and, potentially,
criminal penalties. However, the Company does not believe that any of the
matters described above are likely to subject the Company to criminal liability
or will have a material adverse effect on the Company's business or financial
condition.
 
LEGAL PROCEEDINGS
 
 General
 
  Although Lyondell is involved in numerous and varied legal proceedings, a
significant portion of its litigation arises in three contexts: (1) claims for
personal injury or death allegedly arising out of exposure to the Company's
products; (2) claims for personal injury or death, and/or property damage
allegedly arising out of the generation and disposal of chemical wastes at
Superfund and other waste disposal sites; and (3) claims for personal injury
and/or property damage and air and noise pollution allegedly arising out of the
operation of the Company's facilities. Lyondell (either directly or through
ARCO as its indemnitee) is the real party at interest in these proceedings, all
of which are described at greater length in the Company's periodic filings with
the Commission.
 
  In connection with the transfer of assets and liabilities from ARCO to
Lyondell, Lyondell agreed to assume certain liabilities arising out of the
operation of the Company's integrated petrochemical and petroleum processing
business prior to July 1, 1988. At that time, the Company and ARCO entered into
an agreement ("Cross-Indemnity Agreement") whereby the Company agreed to defend
and indemnify ARCO against certain uninsured claims and liabilities which ARCO
may incur relating to the operation of the business of the Company prior to
July 1, 1988, including liabilities which may arise out of certain of the legal
proceedings described in this section. See "Relationship with ARCO."
 
  Prior to November 20, 1990, ARCO's insurance carriers had assumed the defense
of most of the lawsuits described in this section. Since that date, ARCO's
insurance carriers have refused to advance defense costs in those lawsuits
relating to certain of the waste disposal sites. On November 21, 1990, ARCO
filed suit against certain of its insurers with respect to insurance policies
in effect at times during past years. This litigation involves claims for
reimbursement of defense costs and environmental expenses incurred by ARCO in
connection with ARCO's activities at sites and locations throughout the United
States. ARCO's insurers had been participating in the defense of the Company
and ARCO for the Mont Belvieu proceedings (see "--Claims Related to Company
Operations") as well as the litigation involving the French Ltd. and the Brio
Superfund sites (see "--Claims Related to Waste Disposal Sites"); however,
subsequent to the filing of ARCO's lawsuit, the insurers have refused to
advance defense costs for these proceedings (and certain other proceedings
relating to the Company's products) until the coverage dispute has been
resolved. ARCO currently is paying the defense costs in these proceedings, as
well as certain other waste disposal site litigation, pending the resolution of
the coverage dispute. It has not been determined whether or not the Company has
an obligation to reimburse ARCO for defense costs related to the coverage
dispute.
 
  In addition to the types of proceedings specifically described in this
section, ARCO, the Company and its subsidiaries are defendants in other suits,
some of which are not covered by insurance. Many of these additional suits
involve smaller amounts than the matters described herein, or make no specific
claim for relief. Although final determination of legal liability and the
resulting financial impact with
 
                                       43
<PAGE>
 
respect to the litigation described in this section, as well as the other
litigation affecting the Company, cannot be ascertained with any degree of
certainty, the Company does not believe that any ultimate uninsured liability
resulting from the legal proceedings in which it currently is involved
(directly or indirectly) will individually, or in the aggregate, have a
material adverse effect on the business or financial condition of the Company.
See Note 18 of "Notes to Consolidated Financial Statements."
 
 Claims Related to Company Products
 
  ARCO and the Company are involved in numerous suits arising in whole or in
part from the operation of the Company's integrated petrochemical and petroleum
processing business and the assets related thereto in which the plaintiffs
allege damages arising from exposure to allegedly toxic chemical products, such
as benzene and butadiene. Plaintiffs in these cases usually worked at a
manufacturing facility as employees of one of Lyondell's customers, were
employees of the Company's contractors, or were employees of companies involved
in the transportation of the Company's products to its customers. These suits
allege toxic effects of exposure to chemicals sold in the ordinary course of
business to third parties by various industrial concerns, including ARCO or the
Company, or allege toxic chemical exposures at the Company's manufacturing
facilities. The Company believes that it has always followed a policy of not
only complying with all mandated standards related to product warnings and
exposure levels but also of complying with Company specific standards that were
more strict than those imposed by the law. As a result, the Company believes
that it has a basis to avail itself of legal defenses against claims regarding
its products due to exposures by employees and by claims of exposures from
third parties to whom the Company sold its products.
 
  The vast majority of chemical exposure cases name a large number of
industrial concerns, in addition to the Company, as defendants and are at
various stages of discovery. Although the Company does not believe that the
pending chemical exposure cases will have a material adverse effect on its
business or financial condition, it is difficult to determine the potential
outcome of this type of case. The majority of the plaintiffs in chemical
exposure legal proceedings request relief in the form of unspecified monetary
damages. Furthermore, when specific amounts are requested they often bear no
objective relation to the merits of the case. Notwithstanding the foregoing, it
is possible that if one or more of the presently pending chemical exposure
cases were resolved against ARCO or the Company, the resulting damage award
could be material to the Company without giving effect to contribution or
indemnification obligations of co-defendants or others, or to the effect of any
insurance coverage that may be available to offset the effects of any such
award.
 
 Claims Relating to Waste Disposal Sites
 
  Wastes generated from products produced by facilities transferred from ARCO
and now owned by the Company have, from time to time, been disposed of at waste
disposal landfill sites owned by third parties. Two of these waste disposal
facilities, known as the "French Ltd." and the "Brio" sites, both of which are
located near Houston, Texas, have been classified as "Superfund" sites under
CERCLA. The EPA has entered into consent decrees with numerous PRPs, including
ARCO, from whom wastes were allegedly received at each site. Based on the
current law, the Company does not believe that its obligation to ARCO related
to ARCO's share of clean-up costs at either of these sites will result in a
liability that will have, individually or in the aggregate, a material adverse
effect on the business or financial condition of the Company. In addition,
numerous private plaintiffs have made claims and filed lawsuits involving the
French Ltd. and Brio sites. ARCO (or its affiliate) is the named defendant in
the above described proceedings. Under the provisions of the Cross-Indemnity
Agreement, Lyondell is not obligated to indemnify ARCO for costs and losses
arising out of litigation for which ARCO is insured. Lyondell believes that the
ultimate resolution of these matters will not result in any material obligation
on the part of Lyondell to ARCO with respect to the Brio and the French Ltd.
Superfund sites.
 
 
                                       44
<PAGE>
 
  It is possible that the Company may be involved in future CERCLA and
comparable state law investigations and clean-ups. The Administration recently
proposed a plan to revise significantly the Superfund law which is scheduled
for reauthorization this year. Because the proposal is so recent and because it
has generated strong reactions from business, insurance companies, lenders,
municipalities and environmentalists, the Company is not able to predict
whether the Administration's plan will be enacted or to determine with
specificity what the impact of such legislation would be on the Company.
 
 Claims Related To Company Operations
 
  Several organizations and groups of citizens who own property in the vicinity
of Mont Belvieu, Texas, have instituted lawsuits against ARCO and others who
own underground storage and transportation facilities in the city of Mont
Belvieu. ARCO is paying all defense costs in all of the Mont Belvieu litigation
and the Company does not expect that a claim will be made under the Cross-
Indemnity Agreement. The Company also is a defendant in lawsuits alleging the
emission of loud noises, bright lights and noxious fumes from the Channelview
Complex in proximity to the plaintiffs homes as well as a diminished quality of
well water.
 
 Other Matters
 
  In the fourth quarter of 1992, the Refinery underwent an EPA multi-media
inspection and an OSHA Process Quality Verification Audit. The OSHA inspection
of the Refinery was resolved in an informal settlement agreement in April 1993.
At this time, the EPA has not formally notified the Company of the enforcement
action to be taken, if any.
 
  The Company has reached a settlement agreement with the City of Houston,
Texas and the TNRCC to resolve a lawsuit filed by the City of Houston alleging
violations of the Texas Clean Air Act at the Refinery. Pursuant to the
settlement agreement, the Company has agreed to pay fines of $175,000 to each
of the City of Houston and the TNRCC and has agreed to cover attorneys' fees of
$50,000. In addition, LCR has committed to construct a larger flare as part of
the Refinery upgrade project and to tie-in certain atmospheric relief valves.
Lyondell will fund $1.5 million of the costs of these modifications, which is
the current estimate of the costs of the tie-in to the flare system. See "The
Company--Refining--LCR Transaction--Contributions of the Parties." The
settlement agreement was approved by the court in July 1994.
 
  In addition to the matters reported herein, from time to time the Company
receives notices from federal, state or local governmental entities of alleged
violations of environmental laws and regulations pertaining to, among other
things, the disposal, emission and storage of chemical and petroleum
substances, including hazardous wastes. Although the Company has not been the
subject of significant penalties to date, such alleged violations may become
the subject of enforcement actions or other legal proceedings and may
(individually or in the aggregate) involve monetary sanctions of $100,000 or
more (exclusive of interest and costs).
 
                                       45
<PAGE>
 
                                   MANAGEMENT
 
  Five of the eleven members of the Board of Directors of Lyondell are officers
of ARCO, which owns 49.9 percent of the outstanding Common Stock. Following
consummation of the offering of the Exchangeable Notes, ARCO has informed the
Company that it will cause the ARCO officers who currently serve on the Board
of Directors to resign. The Board of Directors has adopted a resolution
decreasing the size of the Board from eleven members to 6 members, effective
upon these resignations. Set forth below are the directors of the Company as of
July 25, 1994.
 
<TABLE>
<CAPTION>
    NAME, AGE AND PRESENT
   POSITION WITH LYONDELL         BUSINESS EXPERIENCE DURING PAST FIVE YEARS
   ----------------------         ------------------------------------------
<S>                           <C>
Mike R. Bowlin, 51........... Mr. Bowlin was elected a Director of the Company
 Chairman of the Board        on July 23, 1993 and Chairman of the Board on
                              August 13, 1993. On March 28, 1994 Mr. Bowlin was
                              elected Chief Executive Officer of ARCO, effective
                              on July 1, 1994. He has been President and Chief
                              Operating Officer of ARCO since June 1, 1993 and a
                              director of ARCO since June 1992. He was an
                              Executive Vice President of ARCO from June 1992 to
                              May 1993. He was a Senior Vice President of ARCO
                              from August 1985 to June 1992 and President of
                              ARCO International Oil and Gas Company from
                              November 1987 to June 1992. He was Senior Vice
                              President of International Oil and Gas
                              Acquisitions from July 1987 to November 1987. He
                              was President of ARCO Coal Company from August
                              1985 to July 1987. He was a Vice President of ARCO
                              from October 1984 to July 1985. From April 1981 to
                              December 1984, he was Vice President of ARCO Oil
                              and Gas Company. He has been an officer of ARCO
                              since October 1984. He originally joined ARCO in
                              1969.
William T. Butler, 61........ Dr. Butler was elected a Director of the Company
                              on December 21, 1988, effective as of January 25,
                              1989. He has held his current position as
                              President and Chief Executive Officer of Baylor
                              College of Medicine (education and research) since
                              1979. He is also a director of First City
                              Bancorporation of Texas, Inc., C. R. Bard, Inc.
                              and Browning-Ferris Industries Inc.
Allan L. Comstock, 50........ Mr. Comstock was elected a Director of the Company
                              on July 23, 1993. He has been a Vice President and
                              Controller of ARCO since June 1993. He was a Vice
                              President of ARCO Chemical from October 1989
                              through May 1993. From November 1985 to September
                              1989 he was General Auditor of ARCO. He originally
                              joined ARCO in 1969.
Terry G. Dallas, 43.......... Mr. Dallas was elected a Director of the Company
                              on July 23, 1993. He has been a Vice President of
                              ARCO since June 1993 and Treasurer of ARCO since
                              January 24, 1994. He was Vice President, Corporate
                              Planning of ARCO from June 1993 to January 1994.
                              He served as Assistant Treasurer for ARCO
                              Corporate Finance from 1990 to 1993. He was Vice
                              President of Finance, Control
</TABLE>
 
                                       46
<PAGE>
 
<TABLE>
<CAPTION>
   NAME, AGE AND PRESENT
   POSITION WITH LYONDELL        BUSINESS EXPERIENCE DURING PAST FIVE YEARS
   ----------------------        ------------------------------------------
<S>                          <C>
                             and Planning for ARCO British, Ltd. from 1988 to
                             1990 and Manager of International Acquisitions for
                             ARCO International Oil and Gas Company from 1986
                             to 1988. He originally joined ARCO in 1979.
Bob G. Gower, 56............ Mr. Gower was elected Chief Executive Officer of
 President and Chief         the Company on October 24, 1988 and a Director and
 Executive Officer           President of the Company on June 27, 1988. He has
                             been President of Lyondell and its predecessor,
                             the Lyondell Division, since the formation of the
                             Lyondell Division in April 1985. Mr. Gower was a
                             Senior Vice President of ARCO from June 1984 until
                             his resignation as an officer of ARCO in January
                             1989. Prior to 1984 he served in various
                             capacities with the then ARCO Chemical Division.
                             He originally joined ARCO in 1963. Mr. Gower is
                             also a director of Texas Commerce Bank-Houston and
                             Keystone International Inc.
Stephen F. Hinchliffe, Jr.,  Mr. Hinchliffe was elected a Director of the
 60......................... Company on March 1, 1991. Since 1988, he has held
                             his current position of Chairman of the Board and
                             Chief Executive Officer of BHH Management, Inc.,
                             the managing partner of Leisure Group, Inc.
                             Previously, he served as Chairman of the Board of
                             Leisure Group, Inc. (a manufacturer of consumer
                             products), which he founded in 1964.
Dudley C. Mecum II, 59...... Mr. Mecum was elected a Director of the Company on
                             November 28, 1988, effective as of January 25,
                             1989. He has held his current position as a
                             partner with G. L. Ohrstrom & Company (merchant
                             banking) since August 1989. Previously he was
                             Chairman of Mecum Associates, Inc. (management
                             consulting) from December 1987 to August 1989. He
                             served as Group Vice President and director of
                             Combustion Engineering Inc. from 1985 to December
                             1987, and as a managing partner of the New York
                             region of Peat, Marwick, Mitchell & Co. from 1979
                             to 1985. He is also a director of The Travelers,
                             Inc., Dyncorp, VICORP Restaurants, Inc., Fingerhut
                             Companies, Inc. and Roper Industries, Inc.
William C. Rusnack, 49...... Mr. Rusnack was elected a Director of the Company
                             on October 24, 1988. He has been a Senior Vice
                             President of ARCO since July 1990 and President of
                             ARCO Products Company since June 1993. He was
                             President of ARCO Transportation Company from July
                             1990 to May 1993. He was Vice President, Corporate
                             Planning, of ARCO from July 1987 to July 1990. He
                             was Senior Vice President, Marketing and Employee
                             Relations, of the ARCO Oil and Gas Division from
                             August 1985 to July 1987 and Vice President,
                             Manufacturing, of the ARCO Products Division from
                             July 1984 to August 1985. From June 1983 to July
                             1984 he was Vice President, Planning
</TABLE>
 
                                       47
<PAGE>
 
<TABLE>
<CAPTION>
   NAME, AGE AND PRESENT
   POSITION WITH LYONDELL        BUSINESS EXPERIENCE DURING PAST FIVE YEARS
   ----------------------        ------------------------------------------
<S>                          <C>
                             and Control, of the ARCO Products Division. He
                             originally joined ARCO in 1966. Mr. Rusnack is
                             also a director of BWIP Holding, Inc.
Dan F. Smith, 48............ Mr. Smith was elected a Director of the Company on
 Executive Vice President    October 24, 1988. He was elected Executive Vice
 and Chief Operating Officer President and Chief Operating Officer on May 6,
                             1993. He served as Vice President Corporate
                             Planning of ARCO from October 1991 until May 1993.
                             He previously served as Executive Vice President
                             and Chief Financial Officer of the Company from
                             October 1988 to October 1991 and as Senior Vice
                             President of Manufacturing of Lyondell, and its
                             predecessor, the Lyondell Division, from June 1986
                             to October 1988. From August 1985 to June 1986 Mr.
                             Smith served as Vice President of Manufacturing
                             for the Lyondell Division. He joined the Lyondell
                             Division in April 1985 as Vice President, Control
                             and Administration. Prior to 1985, he served in
                             various financial, planning and manufacturing
                             positions with ARCO. He originally joined ARCO in
                             1968.
Paul R. Staley, 64.......... Mr. Staley was elected a Director of the Company
                             on November 28, 1988, effective as of January 25,
                             1989. He has held his current position as Chairman
                             of the Executive Committee of the Board of
                             Directors of P. Q. Corporation (an industry
                             supplier of silicates) since January 1991. He held
                             the positions of President and Chief Executive
                             Officer of P.Q. Corporation from 1973 and 1981,
                             respectively, until January 1991.
William E. Wade, Jr., 51.... Mr. Wade was elected a director of the Company on
                             August 13, 1993. He has been Executive Vice
                             President of ARCO since June 1, 1993 and a
                             director of ARCO since June 1, 1993. He was a
                             Senior Vice President of ARCO from May 1987 to May
                             1993 and President of ARCO Oil and Gas Company
                             from October 1990 to May 1993. He was President of
                             ARCO Alaska, Inc. from July 1987 to July 1990. He
                             was a Vice President of ARCO from 1985 to May
                             1987. From 1981 to 1985, he was Vice President of
                             ARCO Exploration Company. He has been an officer
                             of ARCO since 1985. He originally joined ARCO in
                             1968.
</TABLE>
 
  Set forth below are the executive officers of the Company as of July 25,
1994.
 
<TABLE>
<CAPTION>
    NAME, AGE AND PRESENT              BUSINESS EXPERIENCE DURING PAST
   POSITION WITH LYONDELL         FIVE YEARS AND PERIOD SERVED AS OFFICER(S)
   ----------------------         ------------------------------------------
<S>                           <C>
John R. Beard, 42............ Mr. Beard became Vice President Quality, Supply
 Vice President, Quality,     and Planning on July 1, 1993. Mr. Beard was
 Supply and Planning          appointed Vice President, Planning and Evaluations
                              in May 1992. He served as the Site Manager of
                              Lyondell's Houston Refinery from 1988 until April
                              1992. From 1985 until
</TABLE>
 
                                       48
<PAGE>
 
<TABLE>
<CAPTION>
   NAME, AGE AND PRESENT               BUSINESS EXPERIENCE DURING PAST
   POSITION WITH LYONDELL         FIVE YEARS AND PERIOD SERVED AS OFFICER(S)
   ----------------------         ------------------------------------------
<S>                           <C>
                              1988, he served in management assignments in
                              evaluations, marketing and manufacturing. Prior to
                              1985, he served in various management positions
                              for ARCO Products Company and the ARCO Chemical
                              Division. He originally joined ARCO in 1974.
Bob G. Gower, 56............  Mr. Gower was elected Chief Executive Officer of
 Chief Executive Officer,     the Company on October 24, 1988 and Director and
 President and Director       President of the Company on June 27, 1988. He has
                              been President of Lyondell and its predecessor,
                              the Lyondell Division, since formation of the
                              Lyondell Division in April, 1985. Mr. Gower was a
                              Senior Vice President of ARCO from June, 1984
                              until his resignation as an officer of ARCO in
                              January, 1989. Prior to 1984, he served in various
                              capacities with the then ARCO Chemical Division.
                              He originally joined ARCO in 1963.
Robert H. Ise, 59...........  Mr. Ise was appointed Vice President, Marketing,
 Vice President, Lyondell     Supply and Evaluations of LYONDELL-CITGO Refining
 Petrochemical Company        Company Ltd. on July 1, 1993. He previously served
 Vice President, Marketing,   Lyondell as Vice President, Marketing and Sales,
 Supply and Evaluations,      Polymers and Petroleum Products from April, 1992
 LYONDELL-CITGO Refining      until June, 1993 and continues to serve as a Vice
 Company Ltd.                 President of Lyondell. He served as Vice
                              President, Marketing and Sales, Petroleum
                              Products, from December, 1988 until April, 1992.
                              He served as Vice President of Industrial Products
                              Marketing of the Lyondell Division from June, 1987
                              to December, 1988. From May, 1985 to June, 1987 he
                              served as Director, Industrial Products Marketing
                              for the Lyondell Division. Prior thereto, he
                              served in various marketing capacities for the
                              ARCO Products Division. He originally joined ARCO
                              in 1959.
Richard W. Park, 54.........  Mr. Park was elected Vice President, Human
 Vice President, Human        Resources on June 27, 1988. He previously served
 Resources                    as Vice President of Employee Relations of the
                              Lyondell Division since February, 1987. From 1985
                              to 1987 he served as Manager of Personnel for the
                              then ARCO Chemical Division's Specialty Chemicals
                              and International Units. Prior to 1985 he held
                              other employee relations positions with divisions
                              of ARCO. He originally joined ARCO in 1965.
Jeffrey R. Pendergraft, 46..  Mr. Pendergraft was named Senior Vice President on
 Senior Vice President,       May 6, 1993. Mr. Pendergraft was elected Vice
 Secretary and General        President and General Counsel on June 27, 1988 and
 Counsel                      Secretary on October 24, 1988. From September,
                              1985 to June, 1988, he served as General Attorney
                              of the Lyondell Division. Prior to September,
                              1985, he served as an attorney for various
                              operating divisions and corporate units of ARCO at
                              increasing levels of responsibility. He originally
                              joined ARCO in 1972.
W. Norman Phillips, Jr., 39.  Mr. Phillips was elected Vice President,
 Vice President, Channelview  Channelview Operations on May 6, 1993. From May
 Operations                   22, 1992 until May 6, 1993, he served as Site
                              Manager of Channelview
</TABLE>
 
                                       49
<PAGE>
 
<TABLE>
<CAPTION>
   NAME, AGE AND PRESENT              BUSINESS EXPERIENCE DURING PAST
   POSITION WITH LYONDELL        FIVE YEARS AND PERIOD SERVED AS OFFICER(S)
   ----------------------        ------------------------------------------
<S>                          <C>
                             Operations. He previously served as Manager,
                             Planning from August, 1991 until May, 1992. Prior
                             to August, 1991, he served in various positions in
                             manufacturing and marketing for ARCO and Lyondell,
                             including Sales Manager in the Petroleum Products
                             Marketing Department from September, 1987 until
                             August, 1991. He originally joined ARCO in 1977.
Joseph M. Putz, 53.......... Mr. Putz was elected Vice President and Controller
 Vice President and          on October 24, 1988. Previously he was Vice
 Controller                  President, Control and Administration of Lyondell,
                             and its predecessor, the Lyondell Division, from
                             June 1987 to October 1988. From 1986 to 1987 he
                             served as Director, Internal Control of ARCO. From
                             1985 to 1986 he served as Manager of Special
                             Projects for ARCO. Prior to 1985, he held various
                             financial positions with divisions of ARCO. He
                             originally joined ARCO in 1965.
Dan F. Smith, 48............ Mr. Smith was elected a Director of the Company on
 Executive Vice President    October 24, 1988. He was elected Executive Vice
 and Chief Operating Officer President and Chief Operating Officer on May 6,
                             1993. He served as Vice President Corporate
                             Planning of ARCO from October 1991 until May 1993.
                             He previously served as Executive Vice President
                             and Chief Financial Officer of the Company from
                             October 1988 to October 1991 and as Senior Vice
                             President of Manufacturing of Lyondell, and its
                             predecessor, the Lyondell Division, from June 1986
                             to October 1988. From August 1985 to June 1986,
                             Mr. Smith served as Vice President of
                             Manufacturing for the Lyondell Division. He joined
                             the Lyondell division in April 1985 as Vice
                             President, Control and Administration. Prior to
                             1985, he served in various financial, planning and
                             manufacturing positions with ARCO. He originally
                             joined ARCO in 1968.
Debra L. Starnes, 41........ Ms. Starnes was appointed Vice President,
 Vice President,             Petrochemicals Business Management and Marketing
 Petrochemicals Business     on July 1, 1993. She previously served as Vice
 Management and Marketing    President, Petrochemicals Business Management from
                             May 22, 1992 to July 1993. She served as Vice
                             President, Corporate Planning from September 1991
                             until May 1992. From January 1989 to September
                             1991, she served as Director, Planning. Prior to
                             1989, she held various manufacturing, marketing
                             and planning positions with ARCO and Lyondell. She
                             originally joined ARCO in 1975.
Russell S. Young, 46........ Mr. Young was elected Senior Vice President, Chief
 Senior Vice President,      Financial Officer and Treasurer on May 7, 1992. He
 Chief Financial Officer and previously served as Vice President and Treasurer
 Treasurer                   from November 1988 until May 1992. Mr. Young
                             served as Controller of the ARCO Products Division
                             from September 1986 to January, 1989. From July
                             1984 to September 1986 he served as Assistant
                             Treasurer of ARCO. Prior thereto he served in
                             corporate finance positions for ARCO. He
                             originally joined ARCO in 1980.
</TABLE>
 
  The By-Laws of the Company provide that each officer shall hold office until
the officer's successor is elected or appointed and qualified or until the
officer's death, resignation or removal by the Board of Directors.
 
                                       50
<PAGE>
 
                             RELATIONSHIP WITH ARCO
 
GENERAL
 
  As described in "The Company," Lyondell was first a division and then a
wholly-owned subsidiary of ARCO until January 1989, when ARCO completed an
initial public offering of Lyondell's Common Stock. ARCO currently owns
39,921,400 shares, or 49.9 percent of the outstanding Common Stock. The Company
and ARCO have entered into various intercompany transactions and arrangements
as described below. Five of the eleven directors of Lyondell are officers of
ARCO. Following consummation of the offering of the Exchangeable Notes, ARCO
has informed the Company that it intends to cause the ARCO officers who
currently serve on the Board of Directors to resign; however, ARCO has not
limited its right to nominate and vote for candidates for Lyondell's Board of
Directors. ARCO has also stated its current intent to vote its shares of
Lyondell Common Stock proportionately to the votes of the non-ARCO
stockholders, including with respect to the election of directors; provided,
that in the event a person other than ARCO is deemed to own more than 10
percent of the Common Stock within the meaning of Section 13(d) of the Exchange
Act and there occurs a contested proxy solicitation within the meaning of Rule
14a-11(a) of the Exchange Act, ARCO intends to vote its shares as it deems
appropriate.
 
REGISTRATION RIGHTS AGREEMENT WITH ARCO
 
  Subject to the terms and conditions of a registration rights agreement
("Registration Rights Agreement") to be entered into with Lyondell concurrently
with the U.S. and international underwriting agreements with respect to the
offerings of the Exchangeable Notes ("Underwriting Agreements"), ARCO will
agree that it will not, without the prior approval of Lyondell's Board of
Directors, prior to the maturity of the Exchangeable Notes, (i) initiate or
solicit proposals by a single entity or a group of affiliated entities to
acquire all or substantially all of ARCO's Lyondell Common Stock or otherwise
to acquire Lyondell, (ii) take action by written consent in lieu of a meeting
of Lyondell's stockholders or cause to be called any special meeting of
Lyondell's stockholders, (iii) initiate or propose, or solicit proxies in
respect of, stockholder proposals with respect to the Company, or (iv) solicit
proxies or written consents in respect of replacing or adding members of the
Lyondell Board of Directors.
 
  Under the terms and conditions of the Registration Rights Agreement, ARCO
will also agree that it will not, without the prior approval of Lyondell's
Board of Directors or except upon exchange of the Exchangeable Notes as
contemplated by the prospectus for the Exchangeable Notes, prior to one year
following maturity date of the Exchangeable Notes dispose of (or enter into an
agreement contemplating the disposition of) all or any portion of its Lyondell
Common Stock in a private sale to a single entity or a group of affiliated
entities, provided that this agreement will not restrict ARCO from selling all
or any portion of its Lyondell Common Stock (i) in a public offering intended
to result in widespread distribution; (ii) in a Rule 144 transaction under the
Securities Act in accordance with the volume limitations set forth therein;
(iii) in a Rule 144A transaction intended to result in widespread distribution
to institutional buyers; or (iv) pursuant to a tender offer or exchange offer
by Lyondell or a third party or a merger or other business combination
including Lyondell that is not solicited by ARCO and in which ARCO is treated
on substantially comparable terms with other holders of Lyondell Common Stock.
Notwithstanding the foregoing, ARCO is not precluded from (i) participating in
any self tender offer or exchange offer or open market purchase program
conducted by Lyondell, (ii) voting its shares of Lyondell Common Stock as it
deems proper, or (iii) disclosing (including in response to private inquiries)
either its intentions concerning matters to be brought before Lyondell's
stockholders or making such disclosures as ARCO determines appropriate in
compliance with its obligation under the federal securities laws.
 
  Pursuant to the Registration Rights Agreement, ARCO will have the right to
require the Company to use its best efforts to file up to three registration
statements under the Securities Act covering ARCO
 
                                       51
<PAGE>
 
shares of Lyondell Common Stock. ARCO will also have the right, if the Company
files a registration statement, to require the Company to register ARCO's
shares of Common Stock for sale under the Securities Act on such registration
statement. If the exercise by ARCO of such "piggyback registration rights"
would result in the registration of a number of shares of Common Stock, that in
the judgment of the managing underwriter for the proposed offering exceeds the
number which can be sold in the offering, the number of shares that ARCO
initially intended to register shall be reduced. ARCO has agreed to pay all
costs and expenses relating to the exercise of ARCO's "demand" registration
rights. In the event of a "demand" registration, ARCO and the Company will
indemnify the underwriters of the offering for certain liabilities, including
liabilities under the Securities Act in connection with any such registration,
except that in the event that ARCO owns less than 20 percent of the Lyondell
Common Stock, the Company will indemnify both ARCO and the underwriters.
 
  ARCO will pay all costs and expenses incurred by Lyondell in connection with
this Prospectus, the Registration Statement and the offering of the
Exchangeable Notes. For a further description of expense reimbursement and
indemnification agreements, see "Plan of Distribution."
 
RELATIONSHIP BETWEEN LYONDELL AND ARCO
 
  In connection with the transfer of assets and liabilities to Lyondell in
1988, the Company and ARCO entered into a number of agreements for the purpose
of defining their ongoing relationships. In addition, in July 1987 the Lyondell
Division and ARCO Chemical Company ("ARCO Chemical"), then a wholly-owned (and
now an 83.3 percent owned) subsidiary of ARCO, entered into a number of
agreements in connection with the organization of ARCO Chemical. None of these
agreements was the result of arm's-length negotiations between independent
parties. It was the intention of the Company, ARCO and ARCO Chemical that such
agreements and the transactions provided for therein, taken as a whole,
accommodate the parties' interests in a manner that was fair to the parties,
while continuing certain mutually beneficial joint arrangements. The Audit
Committee of the Board of Directors of the Company, none of the members of
which are affiliated with the Company (including LCR), ARCO or ARCO
Chemical has determined that such agreements, taken as a whole, were in its
opinion fair to the Company and its stockholders. Because of the complexity of
the various relationships between the Company, ARCO and its direct and indirect
subsidiaries, including ARCO Chemical (together, "ARCO Affiliates"), however,
there can be no assurance that each of such agreements, or the transactions
provided for therein, has been effected on terms at least as favorable to the
Company as could have been obtained from unaffiliated third parties.
 
  The terms and provisions of many of those initial agreements have been
modified subsequently or supplemented and additional or modified agreements,
arrangements and transactions have been and will continue to be entered into by
the Company and ARCO Affiliates. Any such future agreements, arrangements and
transactions will be determined through negotiation between the Company and
ARCO Affiliates and it is possible that conflicts of interest will be involved.
Future contractual relations among the Company and ARCO Affiliates will be
subject to certain provisions of the Company's Certificate of Incorporation.
See "--Certificate of Incorporation Provisions Relating to Corporate Conflicts
of Interest." In addition, the Audit Committee of the Board of Directors has
adopted a set of guidelines for the review of all agreements entered into
between the Company and ARCO Affiliates. These guidelines include a provision
that, at least annually, the Audit Committee will review such agreements, or
the transactions provided for therein, to assure that such agreements are, in
its opinion, fair to the Company and its stockholders.
 
  For the year ended December 31, 1993, Lyondell (including LCR) paid ARCO
Affiliates an aggregate of approximately $80 million. For the year ended
December 31, 1993, Lyondell recorded revenues of approximately $278 million
from sales to ARCO Affiliates, of which $263 million represented sales to ARCO
Chemical. Sales to ARCO Chemical accounted for approximately 17 percent of
total revenues from sales of petrochemical products, and approximately seven
percent of revenues from gross sales.
 
                                       52
<PAGE>
 
TECHNOLOGY TRANSFERS AND LICENSES
 
  Effective July 1, 1988, ARCO assigned to the Company numerous domestic and
foreign trademarks and certain U.S. and foreign patents and granted the Company
a nonexclusive license to use other trademarks which contain the word "ARCO,"
to use ARCO's spark symbol as a logo and to use ARCO's color striping scheme,
which license was royalty-free for a period of four years. The Company paid
ARCO approximately $80,000 under the terms of this license in 1993.
 
  In connection with the transfer of assets and liabilities relating to the
Lyondell Division from ARCO to the Company, the Company and ARCO, effective
July 1, 1988, entered into (i) a License Agreement pursuant to which ARCO
licensed to the Company on a nonexclusive, royalty-free basis certain rights
(including Lyondell's right to sublicense to third parties, in some cases
without accounting to ARCO) to ARCO's technology and intellectual property
related to certain operations or assets of the Company, (ii) a technology
assignment agreement pursuant to which legal title to certain other technology
and intellectual property useful in the Company's business (including, without
limitation, technology relating to olefins, including product flexibility) was
transferred to the Company; provided, however, that except for technology
relating to the product flexibility unit, ARCO retained a nonexclusive license
to use the technology and property rights in ARCO's other operations, and (iii)
an immunity from suit agreement in respect of the Company's right to practice
all remaining technology in the possession of the Company prior to July 1,
1988. During 1990, the Company and ARCO entered into a series of amendments to
these agreements designed to clarify the parties' rights under the original
technology transfer. In addition, Lyondell and ARCO executed a patent
maintenance agreement pursuant to which ARCO agreed to maintain certain patents
licensed to Lyondell. Lyondell and ARCO also entered into a letter agreement
granting Lyondell the right to obtain additional licensing rights.
 
CROSS-INDEMNITY AGREEMENT
 
  In connection with the transfer by ARCO of substantially all of the assets
and liabilities of its Lyondell Division to the Company, the Company and ARCO
executed the Cross-Indemnity Agreement. In the Cross-Indemnity Agreement, the
Company agreed generally to indemnify ARCO against substantially all fixed and
contingent liabilities relating to the integrated petrochemical and petroleum
processing business and certain assets of the Lyondell Division. The
liabilities assumed by the Company include the following, to the extent not
covered by ARCO's insurance: (1) all liabilities and obligations of the Company
and its combined subsidiaries, as of July 1, 1988; (2) all liabilities and
obligations under contracts and commitments relating to the business of the
Lyondell Division and certain assets relating thereto; (3) employment and
collective bargaining agreements affecting the Company's employees; (4)
specified pending litigation and other proceedings; (5) federal, state, foreign
and local income taxes to the extent provided in the Cross-Indemnity Agreement;
(6) liabilities for other taxes associated with the Lyondell Division's
business and certain assets relating thereto; (7) liabilities for any past,
present or future violations of federal, state or other laws (including
environmental laws), rules, regulations or other requirements of any
governmental authority in connection with the business of the Lyondell Division
and certain assets relating thereto; (8) existing or future liabilities for
claims based on breach of contract, breach of warranty, personal or other
injury or other torts relating to such integrated petrochemical and petroleum
processing businesses and certain assets relating thereto; and (9) any other
liabilities relating to the assets transferred to the Company or its
subsidiaries. ARCO has indemnified the Company with respect to other claims or
liabilities and other matters of litigation not related to the assets or
business transferred by ARCO to the Company.
 
  The Cross-Indemnity Agreement includes procedures for notice and payment of
indemnification claims and provides that a party entitled to indemnification
for a claim or suit brought by a third party may require the other party to
assume the defense of such claim. The Cross-Indemnity Agreement also includes a
defense cost-sharing agreement, whereby the Company will bear its allocated
defense costs for certain lawsuits.
 
                                       53
<PAGE>
 
SERVICES AGREEMENTS
 
  The Company and ARCO entered into an agreement effective January 1, 1991 and
amended as of February, 1992 (the "Administrative Services Agreement") under
which ARCO agreed to continue to provide various transitional services to the
Company that ARCO had been providing pursuant to previous administrative
service agreements. The services which ARCO now provides the Company pursuant
to the Administrative Services Agreement include telecommunications and certain
computer-related services. The Administrative Services Agreement terminates no
later than December 31, 1997, although it may be terminated in its entirety
earlier than such date upon the terminating party providing the other party
with at least two years prior notice, and a party may elect to terminate some
of the services it is receiving upon 30 days prior notice to the other party.
The Administrative Services Agreement provides for an annual renegotiation of
fees. ARCO earned a fee of approximately $2 million during 1993 for all of the
services (some of which are now provided under other agreements as discussed
below) which it provided under the Administrative Services Agreement.
 
  Effective January 1, 1994, certain services that ARCO had previously been
providing under the Administrative Services Agreement began to be provided
pursuant to an agreement (the "Employee Services Agreement") covering various
employee benefits administration and payroll services and an agreement (the
"Investment Management Agreement") covering investment services with regard to
the management of Lyondell's qualified employee benefit plan funds. Each of
these agreements terminates on May 1, 1998, although it may be terminated in
its entirety by ARCO (provided that ARCO no longer owns at least five percent
of the outstanding Common Stock) by giving Lyondell at least two years prior
notice. In addition, Lyondell may elect to terminate some or all of the
services being provided upon 30 days prior notice. Upon termination of any or
all services, ARCO will provide Lyondell with support and assistance to
accomplish an orderly transition from ARCO's provision of the services to
Lyondell's acquisition of comparable services. The Employee Services Agreement
provides for substantially all services to be provided at a fee based on ARCO's
costs and for the other services to be provided at mutually-agreed fees. The
Investment Management Agreement provides for a renegotiation of fees from time
to time.
 
  Effective January 1, 1991, the Company and ARCO entered into an agreement
which terminated the insurance coverage previously provided by ARCO and
established procedures for the resolution of pending and future claims that are
or will be covered under ARCO's policies in effect prior to January 1, 1991.
 
AGREEMENTS BETWEEN THE COMPANY AND ARCO PIPE LINE COMPANY
 
  The Company has entered into several contracts with ARCO Pipe Line Company
("ARCO Pipe Line") pursuant to which the Company (1) leased certain pipelines
and pipeline segments from ARCO Pipe Line at annual rental rates which include
recovery of operating costs, return on capital investment and inflation
escalators, (2) acquired the services of ARCO Pipe Line to operate various
groups of pipelines owned by the Company, and (3) entered into a throughput and
deficiency commitment for volumes at tariff rates for transportation of crude
oil and other products. Certain of these contracts that relate to the refining
business were assigned to LCR as of July 1, 1993. The Company and LCR paid ARCO
Pipe Line approximately $20 million during 1993 for rental fees and services
under these contracts. In April 1994, the Company and ARCO Pipe Line concluded
negotiations that extend the term of the Company's lease of ARCO Pipe Line's
pipeline system described in (1) above through December 31, 2023. Absent any
major regulatory changes, the terms and conditions of this lease extension will
not be materially different from the current lease.
 
  ARCO Pipe Line also owns various easements and licenses for its pipelines and
related equipment located on the property of the Company or LCR and has
performed services relating to the pipeline
 
                                       54
<PAGE>
 
systems. The Company (including LCR) also ships products over common carrier
pipelines owned and operated by ARCO Pipe Line pursuant to filed tariffs on the
same basis as other non-affiliated customers.
 
AGREEMENTS BETWEEN THE COMPANY AND ARCO CHEMICAL COMPANY
 
  Lyondell provides to ARCO Chemical a large portion of the feedstocks
(including ethylene, propylene and methanol) purchased by ARCO Chemical for its
manufacturing facilities located at Channelview, Texas. Pricing arrangements
under these contracts are generally representative of prevailing market prices.
Lyondell also provides certain nominal plant services at the aforementioned
plants. ARCO Chemical in turn provides certain feedstocks and supplies to
Lyondell at market-based prices.
 
  The Company sells MTBE produced at one of its two MTBE units to ARCO Chemical
at market-based prices. The term of this agreement extends through December
1995. In addition, the Company has agreed to sell to ARCO Chemical MTBE
produced at the Company's second MTBE unit that is in excess of LCR's
requirements at market-based prices.
 
DISPUTE RESOLUTION AGREEMENT
 
  In April 1993, the Company, ARCO and ARCO Chemical entered into a Dispute
Resolution Agreement that mandates a procedure for negotiation and binding
arbitration of significant commercial disputes among any two or more of the
parties.
 
OTHER AGREEMENTS BETWEEN THE COMPANY AND ARCO
 
  Lyondell has purchased and LCR continues to purchase certain of its crude oil
requirements from affiliates of ARCO under short-term arrangements at prices
based on market values at the time of delivery. LCR also purchases crude oil
from affiliates of ARCO from time to time on the spot market at then-current
spot market prices. The Company and LCR also purchased natural gas and natural
gas liquids from affiliates of ARCO during 1993 on the spot market at then-
current spot market prices.
 
  The Company (including LCR) also sold products to ARCO Affiliates, including
crude oil resales and sales of heating oil and lube oil at market-based prices.
 
CERTIFICATE OF INCORPORATION PROVISIONS RELATING TO CORPORATE CONFLICTS OF
INTEREST
 
  In order to address certain potential conflicts of interest between the
Company and ARCO (for purposes of this section the term "ARCO" also includes
ARCO's successors and any corporation, partnership or other entity in which
ARCO owns fifty percent or more of the voting securities or other interests),
the Company's Certificate of Incorporation contains provisions regulating and
defining the conduct of certain affairs of the Company as they may involve ARCO
and its officers and directors, and the powers, rights, duties and liabilities
of the Company and its officers, directors and stockholders in connection
therewith. In general, these provisions recognize that from time to time the
Company and ARCO may engage in the same or similar activities or lines of
business and have an interest in the same areas of corporate opportunities. The
Certificate of Incorporation provides that ARCO has no duty to refrain from (1)
engaging in business activities or lines of business that are the same as or
similar to those of the Company, (2) doing business with any customer of the
Company or (3) employing any officer or employee of the Company. The
Certificate of Incorporation provides that ARCO is not under any duty to
present any corporate opportunity to the Company which may be a corporate
opportunity for both ARCO and the Company, and that ARCO will not be liable to
the Company or its stockholders for breach of any fiduciary duty as a
stockholder of the Company by reason of the fact that ARCO pursues or acquires
such corporate opportunity for itself, directs such corporate opportunity to
another person or does not present the corporate opportunity to the Company.
ARCO currently owns interests in certain chemical companies and refiners (other
than the Company) and has advised the Company that it may continue to acquire
additional interests in chemical companies and refiners.
 
                                       55
<PAGE>
 
  The Certificate of Incorporation provides that directors and officers of the
Company will not be liable to the Company or its stockholders for breach of any
fiduciary duty if they comply with the following provisions of the Certificate
of Incorporation. When a corporate opportunity is offered in writing to an
officer or an officer and a director of the Company who is also an officer or
an officer and a director of ARCO, solely in his or her designated capacity
with one of the two companies, such opportunity shall be first presented to
whichever company was so designated. No person is currently in this category.
Otherwise, (1) a corporate opportunity offered to any person who is an officer
or officer and director of the Company and who is also a director of ARCO,
shall be first presented to the Company, (2) a corporate opportunity offered to
a person who is a director of the Company and who is also an officer or officer
and director of ARCO shall be first presented to ARCO, (3) in all other cases,
a corporate opportunity offered to any person who is an officer and/or a
director of both the Company and ARCO shall be first presented to the Company.
Mr. Bowlin, Mr. Comstock, Mr. Dallas, Mr. Rusnack and Mr. Wade are in category
(2) and no persons currently are in categories (1) and (3).
 
  Another section of the Certificate of Incorporation provides that no
contract, agreement, arrangement or transaction between the Company and ARCO or
between the Company and a director or officer of the Company or of ARCO would
be void or voidable for the reason that ARCO or any director or officer of the
Company or of ARCO are parties thereto or because any such director or officer
were present or participated in the meeting of the Board of Directors which
authorized the contract if the material facts about the contract, agreement,
arrangement or transaction were disclosed or known to the Board of Directors or
the stockholders and the Board of Directors in good faith authorizes the
contract by a vote of a majority of the disinterested directors or the majority
of stockholders approves such contract, agreement, arrangement or transaction.
 
  The foregoing Certificate of Incorporation provisions describe the
obligations of officers and directors of the Company with respect to
presentation of corporate opportunities, but do not limit the ability of the
Company or of ARCO to consider and act upon such opportunities whether or not
such provisions have been followed.
 
                           SECURITY OWNERSHIP BY ARCO
 
  ARCO currently owns, and immediately following the offering of the
Exchangeable Notes will own, 39,921,400 shares, or 49.9 percent, of the
outstanding Common Stock. Pursuant to the terms of the Exchangeable Notes, ARCO
may, at its option, consummate the mandatory exchange at maturity thereof by
delivering to holders thereof shares of Common Stock or cash with an equal
value. ARCO's ownership interest after maturity of the Exchangeable Notes could
remain at 49.9 percent of the presently outstanding number of shares of Common
Stock (if it elects to deliver cash) or could be reduced to less than one
percent of the presently outstanding shares of Common Stock if (a) at maturity
of the Exchangeable Notes the "Maturity Price" is less than or equal to the
"Initial Price" (each as defined in the prospectus for the Exchangeable Notes),
(b) the underwriters of the offering of the Exchangeable Notes elect to
exercise their over-allotment option in full and (c) ARCO elects to deliver
Common Stock instead of cash. However, ARCO is under no obligation to, and
there can be no assurance that ARCO will, elect to exercise its option to
deliver Common Stock pursuant to the terms of the Exchangeable Notes.
 
  For a description of expense reimbursement and indemnification agreements
with respect to this Prospectus, the Registration Statement and the offering of
the Exchangeable Notes, see "Plan of Distribution," and for a description of
ARCO's intentions with respect to the Company and of the Registration Rights
Agreement between ARCO and the Company, see "Relationship with ARCO--General"
and "--Registration Rights Agreement with ARCO."
 
  For additional information concerning the relationship between the Company
and ARCO, see "Relationship with ARCO."
 
                                       56
<PAGE>
 
                          DESCRIPTION OF CAPITAL STOCK
 
  The authorized capital stock of the Company currently consists of 250,000,000
shares of Common Stock, par value $1.00 per share, and 80,000,000 shares of
Preferred Stock, $0.01 par value per share (the "Preferred Stock"). ARCO, which
owns 49.9 percent of the outstanding Common Stock, has entered into a
Registration Rights Agreement with the Company regarding certain voting,
transfer and other matters with respect to the shares of Common Stock it owns.
See "Relationship with ARCO--Registration Rights Agreement with ARCO."
 
COMMON STOCK
 
  The Company is currently authorized to issue 250,000,000 shares of Common
Stock, of which 80,000,000 shares of Common Stock are outstanding at the date
hereof.
 
  Holders of Common Stock are entitled (i) to receive such dividends as may
from time to time be declared by the Board of Directors of the Company; (ii) to
one vote per share on all matters on which the stockholders are entitled to
vote; (iii) to act by written consent in lieu of voting at a meeting of
stockholders; and (iv) to share ratably in all assets of the Company available
for distribution to the stockholders, in the event of liquidation, dissolution
or winding up of the Company. For additional information regarding the
Company's dividend policy, see Item 5 of the Company's 1993 Form 10-K Report,
which report is incorporated herein by reference. The holders of a majority of
the shares of Common Stock represented at a meeting can elect all of the
directors.
 
  Shares of Common Stock are not liable to further calls or assessments by the
Company for any liabilities of the Company that may be imposed on its
stockholders under the laws of the State of Delaware, the state of
incorporation of the Company. There are no preemptive rights for the Common
Stock in the Certificate of Incorporation.
 
  The Transfer Agent, Registrar and Dividend Disbursing Agent for the Common
Stock is The Bank of New York.
 
PREFERRED STOCK
 
  At the July 22, 1994 re-convened annual stockholders meeting, an amendment to
the Certificate of Incorporation of the Company to authorize the issuance of up
to 80,000,000 shares of Preferred Stock, $0.01 par value per share, was
approved. The amendment to the Certificate of Incorporation that was filed on
July 22, 1994 is included in the 1994 Proxy Statement (as supplemented)
incorporated herein by reference. As a result of the amendment, the Board will
be able to specify the precise characteristics of the Preferred Stock to be
issued, in light of current market conditions and the nature of specific
transactions, and will not be required to solicit further authorization from
stockholders for any specific issue of Preferred Stock.
 
  The Board of Directors has adopted a policy providing that no future issuance
of Preferred Stock will be effected without stockholder approval unless the
Board (whose decision shall be conclusive) determines in good faith (i) that
such issuance is primarily for the purpose of facilitating a financing, an
acquisition or another proper corporate objective or transaction, and (ii) that
any anti-takeover effects of such issuance are not the Company's primary
purpose for effecting such issuance. The Board of Directors will not amend or
revoke this policy without giving written notice to the holders of all
outstanding shares of the Company's stock; however, no such amendment or
revocation will be effective, without stockholder approval, to permit a
subsequent issuance of Preferred Stock for the primary purpose of obstructing a
takeover of the Company by any person who has, prior to such written notice to
stockholders, notified the Board of Directors of such person's desire to pursue
a takeover of the Company. As of the date hereof, the Board of Directors has no
present intention to issue any series of Preferred Stock.
 
                                       57
<PAGE>
 
  Nothwithstanding the foregoing, the existence of the authorized but unissued
Preferred Stock could have the effect of discouraging a tender offer or
unsolicited attempt to acquire control of the Company in a transaction that a
stockholder might deem desirable, including takeover attempts that might result
in a premium over the market price of the Common Stock. Preferred stock
issuances involving certain voting or conversion privileges can be used to make
the acquisition of a company more difficult or more costly. The Company is not
aware of any present effort by any person to accumulate the Company's Common
Stock or to obtain control of the Company.
 
                 CERTAIN UNITED STATES FEDERAL TAX CONSEQUENCES
                 FOR NON-UNITED STATES HOLDERS OF COMMON STOCK
 
  The following is a summary of certain United States federal income tax
consequences of the acquisition, ownership and disposition of Common Stock by a
holder that, for United States federal income and estate tax purposes, is a
Non-United States Holder. For purposes of this discussion, a "Non-United States
Holder" means a corporation, individual or partnership, that is, as to the
United States, a foreign corporation, a non-resident alien individual or a
foreign partnership, or a trust, other than one the income of which is subject
to United States federal income tax regardless of its source. This summary does
not address all aspects of the United States federal income and estate taxation
and does not deal with foreign, state and local tax consequences that may be
relevant to non-United States Holders in light of their specific circumstances.
Furthermore, this summary is based upon the provisions of the United States
Internal Revenue Code of 1986, as amended and the regulations, rulings and
judicial decisions thereunder, all of which are subject to change. PROSPECTIVE
INVESTORS ARE URGED TO CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE
UNITED STATES TAX CONSEQUENCES TO THEM OF ACQUIRING, HOLDING AND DISPOSING OF
COMMON STOCK AS WELL AS ANY TAX CONSEQUENCES WHICH MAY ARISE UNDER THE LAWS OF
ANY FOREIGN, STATE, LOCAL OR OTHER TAXING JURISDICTION.
 
DIVIDENDS
 
  Dividends paid to a Non-United States Holder generally will be subject to
withholding of United States federal income tax at a rate of 30 percent (or a
lower rate prescribed by an applicable tax treaty). If the dividends are
effectively connected with the conduct of a trade or business within the United
States by the Non-United States Holder, the dividends will be subject to the
ordinary United States federal income tax on net income that applies to United
States persons and will not be subject to withholding if the Non-United States
Holder files a United States Internal Revenue Service Form 4224 with the
Company or its dividend paying agent. In the case of corporate holders, such
dividends might also be subject to the United States branch profits tax at a
rate of 30 percent (or a lower rate prescribed by an applicable tax treaty). A
Non-United States Holder may be required to satisfy certain certification
requirements in order to obtain any reduction of or exemption from withholding
under the foregoing rules and may obtain a refund of any excess amounts
currently withheld by filing an appropriate refund claim with the United States
Internal Revenue Service.
 
  Distributions in excess of the Company's current and accumulated earnings and
profits, as determined for United States federal income tax purposes, will be
treated first as a return of capital to the extent of the Non-United States
Holder's tax basis in the Common Stock (and will be applied against and reduce
such holder's tax basis in the Common Stock) and thereafter as gain from the
sale of Common Stock. The portion treated as a return of capital will not be
subject to United States federal income tax and the portion, if any, treated as
gain will be subject to the rules described below under "--Gain on
Disposition." Because the Company will not be able to determine whether a
distribution should properly be treated as a dividend or as a return of capital
at the time of payment, it is required to treat all distributions as dividends
for United States withholding tax purposes. Non-United States
 
                                       58
<PAGE>
 
Holders will be eligible to claim a refund to the extent that a distribution
represents a return of capital and may in certain circumstances be eligible to
claim a refund to the extent that a distribution is treated as gain. Non-United
States Holders should consult their own tax advisors with respect to
distributions in excess of current and accumulated earnings and profits.
 
GAIN ON DISPOSITION
 
  General Rule. Subject to special rules for individuals described below, a
Non-United States Holder generally will not be subject to United States federal
income tax on gain recognized on a sale or other disposition of Common Stock
unless (i) the gain is effectively connected with the conduct of a trade or
business within the United States by the Non-United States Holder (in which
case the United States branch profits tax described above may also apply to
corporate holders) or (ii) the gain is treated as effectively connected with
the conduct of a trade or business within the United States because the Company
is or has been a "United States real property holding corporation" for United
States federal income tax purposes (in which case, withholding of such tax may
also apply). The Company believes that it is currently, and is likely to
remain, a United States real property holding corporation. The preceding
sentence notwithstanding, under currently effective United States federal
income tax laws, gain recognized by a Non-United States Holder will not be
treated as effectively connected with the conduct of a trade or business within
the United States (or subject to withholding) unless such Non-United States
Holder held, directly or indirectly, at any time during the five-year period
ending on the date of disposition, more than five percent of the Common Stock.
Non-United States Holders should consult applicable tax treaties, which may
provide for different rules (including possibly the exemption of certain
capital gains from tax).
 
  Individuals. In addition to the rules described above, an individual Non-
United States Holder who holds Common Stock as a capital asset generally will
be subject to tax on any gain recognized on the disposition of such stock if
such individual is present in the United States for 183 days or more in the
taxable year of disposition and (i) has a "tax home" in the United States (as
specifically defined under the United States federal income tax laws) or (ii)
maintains an office or other fixed place of business in the United States to
which the gain from the sale of the stock is attributable. Certain individual
Non-United States Holders may also be subject to tax pursuant to provisions of
United States federal income tax law applicable to certain United States
expatriates.
 
FEDERAL ESTATE TAX
 
  Common Stock owned or treated as owned by an individual Non-United States
Holder at the date of death will be subject to United States federal estate
tax, unless an applicable estate tax treaty provides otherwise.
 
INFORMATION REPORTING AND BACKUP WITHHOLDING
 
  The Company or its designated paying agent (the "payor") must report annually
to the United States Internal Revenue Service and to each Non-United States
Holder the amount of dividends paid to and the tax, if any, withheld with
respect to such holder. That information may also be made available to the tax
authorities of the country in which the Non-United States Holder resides.
 
  United States information reporting requirements (other than the reporting of
dividend payments described in the preceding paragraph ) and United States
backup withholding (imposed at a 31 percent rate) generally will not apply to
dividends paid to a Non-United States Holder at an address outside the United
States, unless the payor has knowledge that the payee is a United States
person. Otherwise, information reporting and backup withholding may apply to
dividends paid on the Common Stock to a Non-United States Holder who fails to
furnish certain information, including a tax identification number, in the
manner required by United States law and applicable regulations.
 
                                       59
<PAGE>
 
  Payment of the proceeds of a disposition of Common Stock by a United States
office of a broker is subject to backup withholding and information reporting,
unless the holder certifies to the broker under penalties of perjury as to its
name, address and status as a Non-United States Holder or the holder otherwise
establishes an exemption. Neither backup withholding nor information reporting
generally will apply to a payment of the proceeds of a disposition of Common
Stock by a foreign office of a foreign broker that is not a United States
Related Person. Information reporting requirements (but not backup withholding)
will apply to a payment of the proceeds of a disposition of Common Stock by a
foreign office of a broker that is a United States person or a United States
Related Person, unless the broker has documentary evidence in its records that
the holder is a Non-United States Related Person, unless the broker has no
knowledge to the contrary and certain other conditions are met. For this
purpose, a "United States Related Person" is (i) a foreign broker, 50 percent
or more of whose gross income for certain periods is effectively connected with
the conduct of a trade or business in the United States or (ii) a foreign
broker that is a "controlled foreign corporation" for United States federal
income tax purposes.
 
  Backup withholding is not an additional tax. Any amounts withheld under the
backup withholding rules will be refunded or credited against the Non-United
States Holder's United States federal income tax liability, provided that
required information is furnished to the United States Internal Revenue
Service.
 
                              PLAN OF DISTRIBUTION
 
  The offering of the Exchangeable Notes by ARCO is being made through
concurrent offerings in the United States and outside the United States.
Subject to the terms and conditions of the Underwriting Agreement for the
offering in the United States, ARCO has agreed to sell to each of the
underwriters named below, and each of such underwriters, for whom Goldman,
Sachs & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Salomon
Brothers Inc are acting as representatives, has severally agreed to purchase
from ARCO the respective number of Exchangeable Notes set forth opposite its
name below:
<TABLE>
<CAPTION>
                                                                     NUMBER OF
                                                                    EXCHANGEABLE
                               UNDERWRITER                             NOTES
                               -----------                          ------------
      <S>                                                           <C>
      Goldman, Sachs & Co..........................................  4,950,000
      Merrill Lynch, Pierce, Fenner & Smith
               Incorporated........................................  4,950,000
      Salomon Brothers Inc.........................................  4,950,000
      Advest, Inc. ................................................    375,000
      Robert W. Baird & Co. Incorporated...........................    375,000
      Bear, Stearns & Co. Inc. ....................................    600,000
      Sanford C. Bernstein & Co., Inc. ............................    375,000
      William Blair & Company......................................    375,000
      Alex. Brown & Sons Incorporated..............................    600,000
      The Buckingham Research Group Incorporated...................    275,000
      CS First Boston Corporation..................................    600,000
      Dain Bosworth Incorporated...................................    375,000
      Dean Witter Reynolds Inc. ...................................    600,000
      A. G. Edwards & Sons, Inc. ..................................    600,000
      J.J.B. Hilliard, W. L. Lyons, Inc. ..........................    275,000
      Howard, Weil, Labouisse, Friedrichs Incorporated.............    600,000
      Janney Montgomery Scott Inc. ................................    375,000
      Kemper Securities, Inc. .....................................    600,000
      Kidder, Peabody & Co. Incorporated...........................    600,000
      C. J. Lawrence/Deutsche Bank Securities Corporation..........    375,000
</TABLE>
 
                                       60
<PAGE>
 
<TABLE>
<CAPTION>
                                                                     NUMBER OF
                                                                    EXCHANGEABLE
                               UNDERWRITER                             NOTES
                               -----------                          ------------
      <S>                                                           <C>
      Legg Mason Wood Walker Incorporated..........................     375,000
      Lehman Brothers Inc. ........................................     600,000
      Luther, Smith & Small, Inc. .................................     275,000
      McDonald & Company Securities, Inc. .........................     375,000
      J. P. Morgan Securities Inc. ................................     600,000
      Morgan Stanley & Co. Incorporated............................     600,000
      Oppenheimer & Co., Inc ......................................     600,000
      Parker/Hunter Incorporated...................................     275,000
      Rauscher Pierce Refsnes, Inc. ...............................     375,000
      Scott & Stringfellow, Inc. ..................................     275,000
      Smith Barney Inc ............................................     600,000
      Stifel, Nicolaus & Company, Incorporated.....................     275,000
      Sutro & Co. Incorporated.....................................     375,000
      UBS Securities Inc. .........................................     600,000
      Wertheim Schroder & Co. Incorporated.........................     600,000
      Wheat, First Securities, Inc. ...............................     375,000
                                                                     ----------
          Total....................................................  30,000,000
                                                                     ==========
</TABLE>
 
  Subject to the terms and conditions of the Underwriting Agreement for the
offering outside of the United States, ARCO has agreed to sell to each of the
international underwriters named below, and each of such international
underwriters, for whom Goldman Sachs International, Merrill Lynch International
Limited and Salomon Brothers International Limited are acting as
representatives, has severally agreed to purchase from ARCO the respective
number of Exchangeable Notes set forth opposite its name below:
<TABLE>
<CAPTION>
                                                                     NUMBER OF
                                                                    EXCHANGEABLE
                               UNDERWRITER                             NOTES
                               -----------                          ------------
      <S>                                                           <C>
      Goldman Sachs International..................................  1,148,000
      Merrill Lynch International Limited..........................  1,146,000
      Salomon Brothers International Limited.......................  1,146,000
      Deutsche Bank AG London......................................    200,000
      Societe Generale.............................................    200,000
      Swiss Bank Corporation.......................................    200,000
      UBS Limited .................................................    200,000
      S.G. Warburg Securities Ltd..................................    200,000
      ABN AMRO Bank N.V............................................     40,000
      Barclays de Zoete Wedd Limited...............................     40,000
      BMO Nesbitt Thomson Ltd......................................     40,000
      BNP Capital Markets Limited..................................     40,000
      CS First Boston Limited......................................     40,000
      Dresdner Bank Aktiengesellschaft.............................     40,000
      Robert Fleming & Co. Limited.................................     40,000
      NatWest Securities Limited...................................     40,000
      Nikko Europe Plc.............................................     40,000
      N M Rothschild & Sons Limited................................     40,000
      J.Henry Schroder Wagg & Co. Limited..........................     40,000
      ScotiaMcLeod Inc.............................................     40,000
      The Toronto-Dominion Bank....................................     40,000
      Westdeutsche Landesbank Girozentrale.........................     40,000
                                                                     ---------
          Total....................................................  5,000,000
                                                                     =========
</TABLE>
 
                                       61
<PAGE>
 
  Under the terms and conditions of the Underwriting Agreements, the
underwriters are committed to take and pay for all of the Exchangeable Notes
offered pursuant to the applicable prospectus related thereto, if any are
taken.
   
  The underwriters propose to offer the Exchangeable Notes in part directly to
the public at the initial public offering price set forth on the cover page of
the applicable prospectus for the Exchangeable Notes; and in part to certain
securities dealers at such price less a concession of $0.45 per Exchangeable
Note. The underwriters may allow, and each of such dealers may reallow, a
concession not exceeding $0.10 per Exchangeable Note to certain dealers and
brokers. After the Exchangeable Notes are released for sale to the public, the
offering price and other selling terms may from time to time be varied by the
representatives.     
 
  ARCO and Lyondell have entered into separate U.S. and international
Underwriting Agreements providing for the concurrent offer and sale by ARCO of
30,000,000 Exchangeable Notes in the United States and 5,000,000 Exchangeable
Notes outside the United States. The offering price and underwriting discount
per Exchangeable Note for the two offerings are identical. The closing of the
offering made in the United States is a condition to the closing of the
offering outside the United States, and vice versa.
 
  ARCO has granted the underwriters an option exercisable for 30 calendar days
after the date of this Prospectus to purchase up to an aggregate of an
additional 4,921,400 Exchangeable Notes solely to cover over-allotments, if
any. If the underwriters exercise their over-allotment option, the underwriters
have severally agreed, subject to certain conditions, to purchase approximately
the same percentage thereof that the number of the Exchangeable Notes to be
purchased by each of them, as shown in the foregoing table, bears to the
aggregate of 35,000,000 Exchangeable Notes being offered. The underwriters may
exercise such option only to cover over-allotments in connection with the sale
of the Exchangeable Notes being offered.
 
  ARCO and Lyondell have agreed that during the period beginning from the date
of this Prospectus and continuing to and including the date 120 days after the
date of this Prospectus, subject to certain exceptions set forth in the
Underwriting Agreements, they will not offer, sell, contract to sell or
otherwise dispose of, without the prior written consent of the representatives
of the underwriters, any shares of Common Stock or any securities convertible
into or exercisable or exchangeable for Common Stock.
 
  The Exchangeable Notes will be a new issue of securities with no established
trading market. The representatives have advised ARCO that they intend to make
a market in the Exchangeable Notes but will not be obligated to do so and may
discontinue any market making at any time without notice. No assurance can be
given as to the liquidity of the trading market for the Exchangeable Notes.
 
  Lyondell has agreed to indemnify the underwriters of the Exchangeable Notes
against certain civil liabilities, including liabilities under the Securities
Act. ARCO has agreed to reimburse Lyondell for any legal and other expenses
reasonably incurred by Lyondell in the preparation, printing and filing of, and
in connection with investigating or defending any action or claim relating to,
this Prospectus, the Registration Statement or the offering of the Exchangeable
Notes.
 
  This Prospectus relates to the 35,000,000 shares of Common Stock that may be
delivered by ARCO pursuant to the Exchangeable Notes and is Appendix A to both
the U.S. prospectus and the international prospectus of ARCO covering the sale
of the Exchangeable Notes (individually, an "ARCO Prospectus"). At maturity of
the Exchangeable Notes the principal amount of each such note will be
mandatorily exchanged by ARCO into shares of Common Stock or, at ARCO's option,
cash with an equal value. For a description of the Exchangeable Notes, see
"Description of the Exchangeable Notes" in the applicable ARCO Prospectus.
 
                                       62
<PAGE>
 
                             CERTAIN LEGAL MATTERS
 
  Certain legal matters will be passed upon for the Company by Jeffrey R.
Pendergraft, Esq., Senior Vice President, Secretary and General Counsel of
Lyondell. Mr. Pendergraft beneficially owns 25,521 shares of Common Stock.
Certain legal matters will be passed upon for the underwriters by Cravath,
Swaine & Moore. Cravath, Swaine & Moore provides legal services to ARCO from
time to time, and is currently doing so on certain matters relating to ARCO's
investment in the Company.
 
                                    EXPERTS
 
  The consolidated balance sheet as of December 31, 1993 and 1992 and the
consolidated statements of income and accumulated deficit, and cash flows for
each of the three years in the period ended December 31, 1993, included in this
Prospectus, have been included herein in reliance on the report of Coopers &
Lybrand, independent accountants, given on the authority of that firm as
experts in accounting and auditing.
 
  With respect to the unaudited consolidated interim financial information for
the three-month and six-month periods ended June 30, 1994 and 1993 included in
this Prospectus, the independent accountants have reported that they have
applied limited procedures in accordance with professional standards for a
review of such information. However, their separate report, appearing elsewhere
herein states that they did not audit and they do not express an opinion on
that interim financial information. Accordingly, the degree of reliance on
their report on such information should be restricted in light of the limited
nature of the review procedures applied. The accountants are not subject to the
liability provisions of Section 11 of the Securities Act of 1933 for their
report on the unaudited consolidated interim financial information because that
report is not a "report" or a "part" of the Registration Statement prepared or
certified by the accountants within the meaning of Sections 7 and 11 of the
Securities Act.
 
                                       63
<PAGE>
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
Report of Independent Accountants.........................................  F-2
Financial Statements
  Consolidated Statement of Income and Accumulated Deficit for the Years
   Ended December 31, 1993, 1992 and 1991.................................  F-3
  Consolidated Balance Sheet as of December 31, 1993 and 1992.............  F-4
  Consolidated Statement of Cash Flows for the Years Ended December 31,
   1993, 1992 and 1991....................................................  F-5
  Notes to Consolidated Financial Statements..............................  F-6
Independent Accountants' Review Report ................................... F-22
Unaudited Financial Statements
  Consolidated Statement of Income for the Three Months and Six Months
   Ended June 30, 1994 and 1993........................................... F-23
  Consolidated Balance Sheet as of June 30, 1994 and December 31, 1993.... F-24
  Consolidated Statement of Cash Flows for the Six Months Ended June 30,
   1994 and 1993.......................................................... F-25
  Notes to Unaudited Consolidated Financial Statements.................... F-26
</TABLE>
 
                                      F-1
<PAGE>
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Stockholders and Board of Directors
of Lyondell Petrochemical Company
 
  We have audited the accompanying consolidated balance sheet of Lyondell
Petrochemical Company as of December 31, 1993 and 1992, and the related
consolidated statements of income and accumulated deficit and cash flows for
each of the three years in the period ended December 31, 1993. These financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
  We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
 
  In our opinion, the financial statements referred to above present fairly, in
all material respects, the consolidated financial position of Lyondell
Petrochemical Company as of December 31, 1993 and 1992, and the consolidated
results of its operations and its cash flows for each of the three years in the
period ended December 31, 1993, in conformity with generally accepted
accounting principles.
 
  As discussed in Note 4 to the consolidated financial statements, during 1993
the Company changed its method of accounting for the cost of repairs and
maintenance incurred in connection with turnarounds of major units at its
manufacturing facilities and in 1992, the Company changed its method of
accounting for income taxes and for postretirement benefits other than
pensions.
 
                                          Coopers & Lybrand
 
Houston, Texas
February 11, 1994
 
                                      F-2
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            CONSOLIDATED STATEMENT OF INCOME AND ACCUMULATED DEFICIT
 
<TABLE>
<CAPTION>
                                                         FOR THE YEAR ENDED
                                                            DECEMBER 31
                                                        ----------------------
                                                         1993    1992    1991
                                                        ------  ------  ------
                                                        MILLIONS OF DOLLARS
                                                               EXCEPT
                                                         PER SHARE AMOUNTS
<S>                                                     <C>     <C>     <C>
Sales and other operating revenues:
  Unrelated parties...................................  $3,572  $4,480  $5,209
  Related parties.....................................     278     329     526
                                                        ------  ------  ------
                                                         3,850   4,809   5,735
Operating costs and expenses:
  Cost of sales:
    Unrelated parties.................................   3,359   4,283   4,801
    Related parties...................................     268     295     409
  Selling, general and administrative expenses........     130     127     126
                                                        ------  ------  ------
                                                         3,757   4,705   5,336
                                                        ------  ------  ------
  Operating income....................................      93     104     399
Interest expense......................................     (74)    (79)    (74)
Interest income.......................................       2      10      14
Minority interest in LYONDELL-CITGO Refining Company
 Ltd..................................................      (5)     --      --
                                                        ------  ------  ------
  Income before income taxes and cumulative effect of
   accounting changes.................................      16      35     339
Provision for income taxes............................      12       9     117
                                                        ------  ------  ------
  Income before cumulative effect of accounting
   changes............................................       4      26     222
Cumulative effect on prior years of acounting changes,
 net of tax...........................................      22     (10)     --
                                                        ------  ------  ------
Net income............................................  $   26  $   16  $  222
                                                        ======  ======  ======
Earnings (loss) per share:
  Income before cumulative effect of accounting
   changes............................................  $  .06  $  .32  $ 2.78
  Cumulative effect on prior years of accounting
   changes............................................     .27    (.12)     --
                                                        ------  ------  ------
  Net income..........................................  $  .33  $  .20  $ 2.78
                                                        ======  ======  ======
Pro forma amounts, assuming retroactive application of
 new accounting method for turnarounds:
  Income before cumulative effect of accounting
   changes............................................          $   31  $  216
                                                                ======  ======
  Income per share before cumulative effect of
   acounting changes..................................          $  .39  $ 2.70
                                                                ======  ======
  Net income..........................................  $    4  $   22  $  216
                                                        ======  ======  ======
  Net income per share................................  $  .06  $  .27  $ 2.70
                                                        ======  ======  ======
Accumulated deficit at beginning of year..............  $ (244) $ (116) $ (200)
  Net income..........................................      26      16     222
  Cash dividends......................................    (108)   (144)   (140)
  Other...............................................      --      --       2
                                                        ------  ------  ------
Accumulated deficit at end of year....................  $ (326) $ (244) $ (116)
                                                        ======  ======  ======
</TABLE>
 
                See notes to consolidated financial statements.
 
                                      F-3
<PAGE>

                         LYONDELL PETROCHEMICAL COMPANY
 
                           CONSOLIDATED BALANCE SHEET
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31
                                                                --------------
                                                                 1993    1992
                                                                ------  ------
                            ASSETS                               MILLIONS OF
                            ------                                 DOLLARS
<S>                                                             <C>     <C>
Current assets:
  Cash and cash equivalents.................................... $   40  $  108
  Restricted cash and cash equivalents (Note 3)................     73      --
  Short-term investments.......................................      6      13
  Accounts receivable:
    Trade......................................................    179     227
    Related parties............................................     25      26
  Inventories..................................................    191     180
  Prepaid expenses and other current assets....................      9      14
                                                                ------  ------
    Total current assets.......................................    523     568
                                                                ------  ------
Fixed assets:
  Property, plant and equipment................................  2,545   2,470
  Less accumulated depreciation and amortization...............  1,890   1,847
                                                                ------  ------
                                                                   655     623
Deferred charges and other assets..............................     53      24
                                                                ------  ------
Total assets................................................... $1,231  $1,215
                                                                ======  ======
<CAPTION>
             LIABILITIES AND STOCKHOLDERS' DEFICIT
             -------------------------------------
<S>                                                             <C>     <C>
Current liabilities:
  Accounts payable:
    Trade...................................................... $  203  $  234
    Related parties............................................      4       9
  Notes payable................................................      4      --
  Current maturities of long-term debt.........................      8      29
  Other accrued liabilities....................................     80      73
                                                                ------  ------
    Total current liabilities..................................    299     345
                                                                ------  ------
Long-term debt.................................................    717     725
Other liabilities and deferred credits.........................     78      72
Deferred income taxes..........................................    101      79
Commitments and contingencies (Note 18)
Minority interest..............................................    124      --
Stockholders' equity (deficit):
  Common stock, $1 par value, 250,000,000 shares authorized,
   80,000,000
   issued and outstanding......................................     80      80
  Additional paid-in capital...................................    158     158
  Accumulated deficit..........................................   (326)   (244)
                                                                ------  ------
    Total stockholders' deficit................................    (88)     (6)
                                                                ------  ------
Total liabilities and stockholders' deficit.................... $1,231  $1,215
                                                                ======  ======
</TABLE>
 
                See notes to consolidated financial statements.
 
                                      F-4
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
                      CONSOLIDATED STATEMENT OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                               FOR THE YEAR
                                                              ENDED DECEMBER
                                                                    31
                                                              ----------------
                                                              1993  1992  1991
                                                              ----  ----  ----
                                                               MILLIONS OF
                                                                 DOLLARS
<S>                                                           <C>   <C>   <C>
Cash flows from operating activities:
  Net income................................................. $ 26  $ 16  $222
  Adjustments to reconcile net income to net cash provided by
   operating activities:
    Cumulative effect of accounting changes, net of tax......  (22)   10    --
    Depreciation and amortization............................   58    39    39
    Deferred taxes...........................................    7     2    18
    Net change in accounts receivable, inventories and
     accounts payable........................................  (11)   54    (1)
    Net change in other working capital accounts.............   16   (20)    3
    Minority interest........................................    5    --    --
    Other....................................................    5     7   (11)
                                                              ----  ----  ----
      Net cash provided by operating activities..............   84   108   270
                                                              ----  ----  ----
Cash flows from investing activities:
  Minority owner contribution................................  116    --    --
  Additions to fixed assets..................................  (69)  (97)  (43)
  Purchases of short-term investments........................   (9)   --  (104)
  Proceeds from sales of short-term investments..............   16    88     3
                                                              ----  ----  ----
      Net cash provided by (used in) investing activities....   54    (9) (144)
                                                              ----  ----  ----
Cash flows from financing activities:
  Proceeds from short-term debt..............................   16    --    --
  Repayments of short-term debt..............................  (12)   --    --
  Proceeds from long-term debt...............................   --   200   150
  Repayments of long-term debt...............................  (29)  (67)  (29)
  Repayments of capitalized lease obligations................   --  (186)  (28)
  Dividends paid............................................. (108) (144) (140)
                                                              ----  ----  ----
      Net cash used in financing activities.................. (133) (197)  (47)
                                                              ----  ----  ----
Increase (decrease) in cash, restricted cash and cash
 equivalents.................................................    5   (98)   79
Cash and cash equivalents at beginning of period.............  108   206   127
                                                              ----  ----  ----
Cash, restricted cash and cash equivalents at end of period.. $113  $108  $206
                                                              ====  ====  ====
</TABLE>
 
                See notes to consolidated financial statements.
 
                                      F-5
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
1. FORMATION OF THE COMPANY AND OPERATIONS
 
  In 1985, Atlantic Richfield Company (ARCO) established the Lyondell
Petrochemical Company as a division of ARCO (Lyondell Division). Lyondell
Petrochemical Corporation, a wholly-owned subsidiary of ARCO, was incorporated
in the state of Delaware in 1985 and subsequently changed its name to Lyondell
Petrochemical Company (Company). Effective July 1, 1988, ARCO transferred
substantially all the assets and liabilities relating to the integrated
petrochemical and petroleum processing business of the Lyondell Division to the
Company. In addition, certain pipeline assets were transferred to the Company.
For financial reporting purposes, the transfer of these assets and liabilities
was recorded at the historical net book value of $127 million as of July 1,
1988.
 
  On January 25, 1989, ARCO completed an initial public offering of 43,000,000
shares of the Company's 80,000,000 shares of common stock owned by ARCO. The
Company received none of the proceeds from the sale. As of December 31, 1993,
ARCO owned 39,921,400 shares, which represents 49.9 percent of the outstanding
common stock.
 
  The Company and LYONDELL-CITGO Refining Company Ltd. (LCR) operate in two
business segments: petrochemicals and refining. The Company generally sells its
petrochemical products to customers for use primarily in the manufacture of
other chemicals and products, which in turn are used in the production of a
wide variety of consumer and end-use products. LCR sells its principal refined
products primarily to CITGO Petroleum Corporation (CITGO) and to a lesser
extent, other marketers of petroleum products. See Note 3.
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
  Basis of Presentation--The consolidated financial statements include the
accounts of the Company and its subsidiaries. All significant transactions
between the entities of the Company have been eliminated from the consolidated
financial statements. Certain amounts from prior years have been reclassified
to conform to current year presentation.
 
  Cash, Cash Equivalents and Short-Term Investments--Cash equivalents consist
of highly liquid debt instruments such as certificates of deposit, commercial
paper and money market accounts purchased with an original maturity date of
three months or less. Short-term investments consist of similar investments
maturing in more than three months from purchase. The Company's policy is to
invest cash in conservative, highly rated instruments and limit the amount of
credit exposure to any one institution. The Company performs periodic
evaluations of the relative credit standing of these financial institutions
which are considered in the Company's investment strategy. Cash equivalents and
short-term investments are stated at cost which approximates market value
because of the short maturity of these instruments.
 
  The Company has no requirements for compensating balances in a specific
amount at a specific point in time. The Company does maintain compensating
balances for some of its banking services and products. Such balances are
maintained on an average basis and are solely at the Company's discretion, so
that effectively on any given date, none of the Company's cash is restricted
with the exception of cash held for use in connection with LCR capital projects
and other expenditures as determined by the LCR owners (see Note 3).
 
  Accounts Receivable--The Company sells its products primarily to companies in
the petrochemical and refining industries. The Company performs ongoing credit
evaluations of its customers' financial condition and in certain circumstances
requires letters of credit from them. The Company's allowance for doubtful
accounts receivable, which is reflected in the consolidated balance sheet as a
reduction in accounts receivable, totaled $2 million at December 31, 1993 and
1992.
 
                                      F-6
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  Inventories--Inventories are stated at the lower of cost or market. Cost is
determined on the last-in, first-out (LIFO) basis except for materials and
supplies, which are valued at average cost.
 
  Fixed Assets--Fixed assets are recorded at cost. Depreciation of fixed assets
is computed using the straight-line method over the estimated useful lives of
the related assets as follows:
 
<TABLE>
        <S>                                     <C> <C>
        Manufacturing facilities and equipment   -- 5 to 30 years
        Leased assets and improvements           -- 5 to 20 years
</TABLE>
 
  Upon retirement or sale, the Company removes the cost of the assets and the
related accumulated depreciation from the accounts and reflects any resulting
gains or losses in income.
 
  Environmental Remediation Costs--Expenditures related to investigation and
remediation of contaminated sites which include operating facilities and waste
disposal sites, are accrued when it is probable that a liability has been
incurred and the amount of that liability can reasonably be estimated. These
costs are expensed or capitalized in accordance with generally accepted
accounting principles.
 
  Futures Contracts--The Company executes futures contracts primarily to hedge
fluctuations in product prices and feedstock costs. Changes in the market value
of hedging contracts are reported as an adjustment to cost of sales upon
completion of the hedged transaction.
 
  Exchanges--Crude oil and finished product exchange transactions, which are of
a homogeneous nature of commodities in the same line of business, that do not
involve the payment or receipt of cash, are not accounted for as purchases and
sales. Any resulting volumetric exchange balances are accounted for as
inventory in accordance with the normal LIFO valuation policy. Exchanges that
are settled through payment and receipt of cash are accounted for as purchases
and sales.
 
  Income Taxes--Deferred taxes result from temporary differences in the
recognition of revenues and expenses for tax and financial reporting purposes
and are calculated, effective in 1992 with the adoption of Statement of
Financial Accounting Standards (SFAS) No. 109, "Accounting for Income Taxes",
based upon cumulative book/tax differences in the balance sheet.
 
3. FORMATION OF LYONDELL-CITGO REFINING COMPANY LTD.
 
  On July 1, 1993, the Company and CITGO announced the commencement of
operations of LCR, a new entity formed and owned by the Company and CITGO in
order to own and operate the Company's refining business, including the full-
conversion Houston refinery (Refinery). LCR is undertaking a major upgrade
project at the Refinery to enable the facility to process substantial
additional volumes of very heavy crude oil.
 
  LCR is a limited liability company organized under the laws of the state of
Texas. The Company owns its interest in LCR through a wholly-owned subsidiary,
Lyondell Refining Company. CITGO holds its interest through CITGO Refining
Investment Company, a wholly-owned subsidiary of CITGO. CITGO has committed to
reinvest its share of operating cash flow during the upgrade project, while the
Company has unrestricted access to its share of operating cash flow from LCR.
 
  Under the terms of the transaction, CITGO will provide a major portion of the
funds for the upgrade project, as well as certain funds for general refinery
capital projects. Project engineering for the upgrade is currently underway and
at the present time, LCR management anticipates the cost over the next three to
four years to be approximately $800 million.
 
                                      F-7
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  Funding for the upgrade project will occur in three phases. The first phase,
the initial $300 million, will be funded by CITGO. The second phase will be
funded by an LCR borrowing of $200 million. The third phase, which is expected
to occur toward the end of the upgrade project, will be a combination of LCR
borrowing and contributions from CITGO and the Company. Prior to completion of
the upgrade project, the financing costs for the upgrade project loans will be
funded by CITGO. The timing of the third phase and the level of contributions
from the Company and CITGO will be dependent upon the total cost of the upgrade
project. It is currently anticipated that the Company will contribute, in the
form of a subordinated loan, 25 percent of the cost of the upgrade project in
excess of $500 million ($75 million if the cost of the upgrade project equals
$800 million).
 
  On July 1, 1993, the Company contributed its refining assets (including the
lube oil blending and packaging plant in Birmingport, Alabama) and refining
working capital to LCR and retained an approximate 95 percent interest in LCR.
CITGO contributed $50 million for future capital projects of LCR and in
exchange received an approximate five percent interest in LCR. CITGO also made
an additional $50 million contribution for future capital projects of LCR on
December 31, 1993. At December 31, 1993, CITGO had an approximate 10 percent
interest in LCR. In addition to the funding related to the upgrade project
described in the prior paragraph, CITGO has one additional contribution
commitment of $30 million to be made upon completion of the upgrade project and
it has an option to make an additional equity contribution sufficient to
increase its interest to 50 percent.
 
  On July 1, 1993, LCR entered into a long-term crude oil supply agreement with
LAGOVEN, S.A., an affiliate of CITGO. In addition, under the terms of a long-
term product sales agreement, CITGO will purchase a majority of the refined
products produced at the Refinery. Both LAGOVEN and CITGO are subsidiaries of
Petroleos de Venezuela, S.A., the national oil company of Venezuela.
 
  Also effective July 1, 1993, the parties entered into multiple agreements for
feedstock and product sales between LCR and the Company. These agreements
generally are aimed at preserving much of the synergy that previously existed
between the Company's refining and petrochemical businesses. LCR and the
Company also have entered into a tolling agreement, pursuant to which alkylate
and MTBE will be produced at the Channelview Complex for LCR, and various
administrative services agreements.
 
  With respect to liabilities associated with LCR, the Company generally has
retained liability for events that occurred prior to July 1, 1993 and certain
on-going environmental projects at the Refinery. LCR generally is responsible
for liabilities associated with events occurring after June 30, 1993 and on-
going environmental compliance inherent to the operation of the Refinery.
 
  At December 31, 1993, $73 million of cash and $6 million of short-term
investments were restricted for use in connection with LCR capital projects,
including the Refinery upgrade project and other expenditures as determined by
the LCR owners.
 
4. ACCOUNTING CHANGES
 
  In the first quarter of 1993, effective January 1, 1993, the Company changed
its method of accounting for the cost of repairs and maintenance incurred in
connection with turnarounds of major units at its manufacturing facilities.
Under the new method, turnaround costs exceeding $5 million are deferred and
amortized on a straight-line basis until the next planned turnaround, generally
four to six years. In prior years, all turnaround costs were expensed as
incurred. The Company believes that the new method of accounting is preferable
in that it provides for a better matching of turnaround costs with future
product revenues. The cumulative effect of this accounting change for years
prior to 1993
 
                                      F-8
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
resulted in a benefit of $33 million ($22 million or $.27 per share after
income taxes), and was included in first quarter income. The change resulted in
$9 million after-tax (or $.11 per share) of additional amortization expenses
during the year ended December 31, 1993.
 
  In the fourth quarter of 1992, the Company adopted, effective January 1,
1992, the provisions of SFAS No. 106, "Employers' Accounting for Postretirement
Benefits Other Than Pensions", requiring the accrual of postretirement
benefits. The applicable postretirement benefits include medical and life
benefit plans. In prior years, expenses for these plans were recognized on a
pay-as-you-go basis. The change resulted in a decrease of 1992 net income
before cumulative effect of accounting changes of approximately $3 million (or
$.04 per share). The unfavorable effect of this accounting change through
December 31, 1991 amounted to $28 million before taxes or $18 million (or $.22
per share) net of tax and was charged against 1992 income.
 
  In the fourth quarter of 1992, the Company adopted, effective January 1,
1992, the provisions of SFAS No. 109, "Accounting for Income Taxes". The
Statement requires, among other things, a change from the deferred to the
liability method of computing deferred income taxes. The favorable cumulative
effect of this accounting change on years prior to 1992 was an $8 million (or
$.10 per share) reduction in the Company's deferred tax liability and was
included in 1992 income. The favorable effect of the change on 1992 net income,
excluding the cumulative effect upon adoption, was $2 million (or $.02 per
share).
 
  Effective January 1, 1992, the Company adopted SFAS No. 112, "Employers'
Accounting for Postemployment Benefits". The standard requires companies to
accrue the cost of postemployment (prior to retirement) benefits either during
the years that the employee renders the necessary service or at the date of the
event giving rise to the benefit, depending upon whether certain conditions are
met. The effect of adoption did not have a material impact on 1992 net income.
 
5. RELATED PARTY TRANSACTIONS
 
  Related party transactions with ARCO are summarized as follows:
 
<TABLE>
<CAPTION>
                                                                 1993 1992 1991
                                                                 ---- ---- ----
                                                                  MILLIONS OF
                                                                    DOLLARS
      <S>                                                        <C>  <C>  <C>
      Costs
        Crude oil purchases..................................... $53  $140 $299
        Product purchases.......................................   3     9   13
        Transportation fees.....................................  27    24   24
        Other, net..............................................   2     2    2
                                                                 ---  ---- ----
          Total................................................. $85  $175 $338
                                                                 ===  ==== ====
      Sales of crude oil and products........................... $15  $ 33 $171
                                                                 ===  ==== ====
</TABLE>
 
  In addition, sales to an affiliate, ARCO Chemical Company, consisting of
benzene, ethylene, propylene, butylene, methanol and other products and
services, were $263 million, $296 million and $355 million for the years ended
December 31, 1993, 1992 and 1991, respectively.
 
6. SUPPLEMENTAL CASH FLOW INFORMATION
 
  Supplemental cash flow information is summarized as follows:
 
<TABLE>
<CAPTION>
                                                                  1993 1992 1991
                                                                  ---- ---- ----
                                                                   MILLIONS OF
                                                                     DOLLARS
      <S>                                                         <C>  <C>  <C>
      Cash paid during the year for:
        Interest................................................. $76  $77  $72
        Income taxes............................................. $ 7  $23  $98
</TABLE>
 
                                      F-9
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  As of December 31, 1993, fixed assets included $16 million of non-cash
additions of which $14 million related to accounts payable accruals.
 
7. INVENTORIES
 
  The categories of inventory and their book values at December 31, 1993 and
1992, were as follows:
 
<TABLE>
<CAPTION>
                                                                       1993 1992
                                                                       ---- ----
                                                                       MILLIONS
                                                                          OF
                                                                        DOLLARS
      <S>                                                              <C>  <C>
      Crude oil....................................................... $ 68 $ 51
      Refined products................................................   29   26
      Petrochemicals..................................................   57   68
      Materials and supplies..........................................   37   35
                                                                       ---- ----
                                                                       $191 $180
                                                                       ==== ====
</TABLE>
 
  For the years ended December 31, 1993, 1992 and 1991, the Company reduced
cost of sales by approximately $6 million, $1 million and $6 million,
respectively, associated with the reduction in LIFO inventories. The excess of
the current cost of inventories over book value was approximately $56 million
and $135 million at December 31, 1993 and 1992, respectively.
 
8. FIXED ASSETS
 
  The components of fixed assets at December 31, 1993 and 1992, were as
follows:
 
<TABLE>
<CAPTION>
                                                                   1993   1992
                                                                  ------ ------
                                                                   MILLIONS OF
                                                                     DOLLARS
      <S>                                                         <C>    <C>
      Manufacturing facilities and equipment..................... $2,516 $2,441
      Land.......................................................     26     26
      Leased assets and improvements.............................      3      3
                                                                  ------ ------
                                                                  $2,545 $2,470
                                                                  ====== ======
</TABLE>
 
9. DEFERRED CHARGES AND OTHER ASSETS
 
  Deferred charges and other assets at December 31, 1993 and 1992, was
comprised of the following:
 
<TABLE>
<CAPTION>
                                                                       1993 1992
                                                                       ---- ----
                                                                       MILLIONS
                                                                          OF
                                                                        DOLLARS
      <S>                                                              <C>  <C>
      Deferred turnaround costs (Note 4).............................. $18  $--
      Company owned life insurance....................................  17   12
      Other...........................................................  18   12
                                                                       ---  ---
                                                                       $53  $24
                                                                       ===  ===
</TABLE>
 
                                      F-10
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
10. OTHER ACCRUED LIABILITIES
 
  Other accrued liabilities at December 31, 1993 and 1992, were as follows:
 
<TABLE>
<CAPTION>
                                                                       1993 1992
                                                                       ---- ----
                                                                       MILLIONS
                                                                          OF
                                                                        DOLLARS
      <S>                                                              <C>  <C>
      Income taxes.................................................... $--  $ 5
      Accrued taxes other than income.................................  29   26
      Accrued interest................................................  11   11
      Accrued payroll.................................................  20   19
      Other...........................................................  20   12
                                                                       ---  ---
                                                                       $80  $73
                                                                       ===  ===
</TABLE>
 
11. LONG-TERM DEBT AND FINANCING ARRANGEMENTS
 
  Long-term debt at December 31, 1993 and 1992, was comprised of the following:
 
<TABLE>
<CAPTION>
                                                                       1993 1992
                                                                       ---- ----
                                                                       MILLIONS
                                                                          OF
                                                                        DOLLARS
      <S>                                                              <C>  <C>
      9.95% Notes due in 1996......................................... $150 $150
      10.00% Notes due in 1999........................................  150  150
      8.25% Notes due in 1997.........................................  100  100
      9.125% Notes due in 2002........................................  100  100
      Medium-Term Notes...............................................  225  254
                                                                       ---- ----
                                                                        725  754
      Less current portion............................................    8   29
                                                                       ---- ----
        Total long-term debt.......................................... $717 $725
                                                                       ==== ====
</TABLE>
 
  Aggregate maturities of long-term debt during the five years subsequent to
December 31, 1993 are as follows: 1994-$8 million; 1995-$10 million; 1996-$150
million; 1997-$112 million; 1998-$32 million.
 
  Effective July 1, 1993, LCR entered into a 364 day unsecured revolving credit
facility with a group of banks with Continental Bank, N.A., as agent. Under
terms of the credit facility, LCR may borrow a maximum of $100 million in the
form of cash or letters of credit with interest based on prime, LIBOR or CD
rates at LCR's option. The credit facility may be extended at the request of
LCR upon consent of the bank group. The credit facility contains covenants that
limit LCR's ability to modify certain significant contracts, dispose of assets
or merge or consolidate with other entities. At December 31, 1993, no amounts
were outstanding under this credit facility.
 
  During December, 1993, the Company finalized a five year, $400 million
unsecured revolving credit facility (Credit Facility) which replaced its
existing $300 million credit facility which was due to expire in July, 1994. In
connection with the Credit Facility, the Company paid administrative,
arrangement and commitment fees totaling $3.2 million. At December 31, 1993, no
amounts were outstanding under the Credit Facility.
 
  Under the terms of the Credit Facility, the interest rate is based on Euro-
Dollar or CD rates, at the Company's option, and also is dependent upon the
Credit Facility utilization rate and the Company's debt ratings. The Credit
Facility contains restrictive covenants regarding the incurrence of additional
debt, the maintenance of certain fixed charge coverage and leverage ratios and
the making of
 
                                      F-11
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
contributions to LCR, as well as the payment of dividends to the extent that
the Company's net income after January 1, 1994 generally does not exceed, over
time, dividends declared or paid after that date.
 
  The Credit Facility's debt incurrence covenant restricts the incurrence by
the Company of additional debt, including debt under the Credit Facility,
unless, immediately after giving effect to the additional borrowing, the ratio
of earnings before depreciation, amortization, interest and income taxes, to
interest expense exceeds the limits set forth in the Credit Facility. However,
the debt incurrence covenant does not become applicable until the debt incurred
by the Company after December 31, 1993 exceeds $75 million.
 
  During March, 1992, the Company completed the placement of $200 million of
Notes consisting of $100 million of 8.25 percent Notes due 1997 and $100
million of 9.125 percent Notes due 2002. A majority of the proceeds was used in
April, 1992 to prepay amounts due under capitalized leases relating to the
olefins plants, which allowed the Company to terminate the leases and acquire
ownership of the plants.
 
  The Company's Medium-Term Notes mature at various dates from 1994 to 2005 and
have a weighted average interest rate at December 31, 1993 and 1992 of 9.85
percent.
 
  The Notes due 1996 and 1999, and the Medium-Term Notes contain provisions
that would allow the holders to require the Company to repurchase the debt upon
the occurrence of certain events together with specified declines in public
ratings on the Notes due 1996 and 1999. Certain events include acquisitions by
persons other than ARCO or the Company of more than 20 percent of the Company's
common stock, any merger or transfer of substantially all of the Company's
assets, in connection with which the Company's common stock is changed into or
exchanged for cash, securities or other property and payment of certain
"special" dividends.
 
  At December 31, 1993, the Company had letters of credit outstanding totaling
$33.8 million.
 
  Based on the borrowing rates currently available to the Company for debt with
terms and average maturities similar to the Company's debt portfolio, the fair
value of long-term debt is $776 million.
 
12. EARNINGS PER SHARE
 
  Earnings per share were computed based on the weighted average number of
shares outstanding of 80,000,000 for the years ended December 31, 1993, 1992
and 1991.
 
13. STOCKHOLDERS' EQUITY (DEFICIT)
 
  Dividends--During 1993, the Company paid a regular dividend to stockholders
in the amount of $.45 per share during the first and second quarters and a
regular dividend to stockholders in the amount of $.225 per share during each
of the remaining two quarters. During 1992, the Company paid regular quarterly
dividends of $.45 per share. During 1991, the Company paid a regular dividend
to stockholders in the amount of $.40 per share during the first quarter and
$.45 per share during each of the remaining three quarters.
 
  Return of Capital--During 1993, the Company paid $108 million in dividends.
Total dividends paid during the year exceeded cumulative earnings and profits,
as computed for federal income tax purposes. Subject to final determination by
the Internal Revenue Service, 100 percent of each of the 1993 quarterly
dividend payments was considered a return of capital.
 
  Stock Options--The Company's Executive Long-Term Incentive Plan (LTI Plan),
became effective November 7, 1988. The LTI Plan provides, among other things,
for the granting to officers and other
 
                                      F-12
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
key management employees of non-qualified stock options for the purchase of up
to 1,295,000 shares of the Company's common stock. The number of options
exercisable each year is equal to 25 percent of the number granted after each
year of continuous service starting one year from the date of grant. The LTI
Plan provides that the option price per share will not be less than 100 percent
of the fair market value of the stock on the effective date of the grant. As of
December 31, 1993, options covering 761,732 shares were outstanding under the
LTI Plan of which 283,056 were exercisable at a weighted average price of
$22.10 per share.
 
<TABLE>
<CAPTION>
                                              NUMBER   OPTION PRICE
                                                OF       AVERAGE
                                              SHARES    PER SHARE      TOTAL
                                              -------  ------------ -----------
      <S>                                     <C>      <C>          <C>
      Balance, December 31, 1991............. 373,560     $21.42    $ 8,002,196
        Granted.............................. 222,290      23.00      5,112,670
        Exercised............................ (12,115)     18.67       (226,205)
        Canceled.............................  (7,433)     22.84       (169,768)
                                              -------               -----------
      Balance, December 31, 1992............. 576,302      22.07    $12,718,893
                                              -------               -----------
        Granted.............................. 259,490      26.00      6,746,740
        Exercised............................  (1,808)     21.01        (37,984)
        Canceled............................. (72,252)     22.29     (1,610,782)
                                              -------               -----------
      Balance, December 31, 1993............. 761,732      23.39    $17,816,867
                                              =======               ===========
</TABLE>
 
  The Company's Incentive Stock Option Plan (ISO Plan) became effective January
12, 1989. The ISO Plan is a qualified plan which provides for the granting of
stock options for the purchase of up to 550,000 shares of the Company's common
stock. All employees of the Company who are not on the executive payroll are
eligible to participate in the ISO Plan, subject to certain restrictions.
Various restrictions apply as to when and to the number of stock options that
may be exercised during any year. In no event, however, may a stock option be
exercised prior to the first anniversary of the date the stock option was
granted. As of December 31, 1993, options covering 476,665 shares were
outstanding at an average exercise price of $29.35 per share. These options
were held by 2,053 eligible employees. At December 31, 1993, no stock options
were exercisable. The following summarizes stock option activity for the ISO
Plan:
 
<TABLE>
<CAPTION>
                                              NUMBER   OPTION PRICE
                                                OF       AVERAGE
                                              SHARES    PER SHARE      TOTAL
                                              -------  ------------ -----------
      <S>                                     <C>      <C>          <C>
      Balance, December 31, 1991............. 528,614     $29.06    $15,362,755
        Granted..............................   8,729      30.00        261,870
        Exercised............................  (5,614)     19.44       (109,136)
        Canceled............................. (27,710)     26.80       (742,649)
                                              -------               -----------
      Balance, December 31, 1992............. 504,019      29.31    $14,772,840
                                              -------               -----------
        Granted..............................      --         --             --
        Exercised............................      --         --             --
        Canceled............................. (27,354)     28.59       (782,034)
                                              -------               -----------
      Balance, December 31, 1993............. 476,665      29.35    $13,990,806
                                              =======               ===========
</TABLE>
 
                                      F-13
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
14. LEASES
 
  At December 31, 1993, future minimum rental payments for operating leases
with noncancelable lease terms in excess of one year were as follows:
 
<TABLE>
<CAPTION>
                                                                   AMOUNT
                                                             -------------------
                                                             MILLIONS OF DOLLARS
      <S>                                                    <C>
      1994..................................................        $ 36
      1995..................................................          30
      1996..................................................          22
      1997..................................................          20
      1998..................................................          19
      Thereafter............................................          17
                                                                    ----
        Total minimum lease payments........................        $144
                                                                    ====
</TABLE>
 
  Operating lease net rental expenses for 1993, 1992 and 1991 were $43 million,
$35 million and $33 million, respectively.
 
15. RETIREMENT PLANS
 
  All Lyondell and LCR employees are covered by defined benefit pension plans.
Retirement benefits are based on years of service and the employee's
compensation primarily during the last three years of service. The funding
policy for these plans is to make periodic contributions as required by
applicable regulations. Lyondell and LCR accrue pension costs based on an
actuarial valuation and fund the plans through contributions to separate trust
funds that are kept apart from Lyondell or LCR's funds. Lyondell and LCR also
have unfunded supplemental nonqualified retirement plans which provide pension
benefits for certain employees in excess of the qualified plans' limits.
 
  The following table sets forth the funded status of Lyondell and LCR's
retirement plans and the amounts recognized in the Company's consolidated
balance sheet at December 31, 1993 and 1992:
 
<TABLE>
<CAPTION>
                                            1993                  1992
                                    --------------------- ---------------------
                                    PLANS WITH PLANS WITH PLANS WITH PLANS WITH
                                     ASETS IN    ABO IN   ASSETS IN    ABO IN
                                    EXCESS OF  EXCESS OF  EXCESS OF  EXCESS OF
                                       ABO       ASSETS      ABO       ASSETS
                                    ---------- ---------- ---------- ----------
                                                MILLIONS OF DOLLARS
<S>                                 <C>        <C>        <C>        <C>
Actuarial present value of benefit
 obligations:
  Vested benefit obligation........    $53        $21        $46        $ 2
                                       ===        ===        ===        ===
  Accumulated benefit obligation
   (ABO)...........................    $54        $25        $49        $ 2
                                       ===        ===        ===        ===
  Projected benefit obligation.....    $84        $42        $78        $ 4
Plan assets at fair value,
 primarily stocks and bonds........     62         18         69         --
                                       ---        ---        ---        ---
Projected benefit obligation in
 excess of plan assets.............    (22)       (24)        (9)        (4)
Unrecognized net loss..............     22         14         10          1
Prior service cost not yet
 recognized in pension cost........     (2)         3         (1)        --
Remaining unrecognized net asset...     (4)        --         (5)         1
                                       ---        ---        ---        ---
Net pension liability..............    $(6)       $(7)       $(5)       $(2)
                                       ===        ===        ===        ===
</TABLE>
 
                                      F-14
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  The Company's net pension cost for 1993, 1992 and 1991 included the following
components:
 
<TABLE>
<CAPTION>
                                                               1993  1992  1991
                                                               ----  ----  ----
                                                                MILLIONS OF
                                                                  DOLLARS
      <S>                                                      <C>   <C>   <C>
      Service cost--benefits earned during the period......... $  5  $ 4   $  4
      Interest cost on projected benefit obligations..........    8    6      5
      Actual (gain) loss on plan assets.......................  (14)  (4)   (10)
      Net amortization and deferral...........................    7   (2)     5
                                                               ----  ---   ----
      Net periodic pension cost............................... $  6  $ 4   $  4
                                                               ====  ===   ====
</TABLE>
 
 
  The assumptions used as of December 31, 1993, 1992 and 1991, in determining
the pension costs and pension liability shown above were as follows:
 
<TABLE>
<CAPTION>
                                                                  1993 1992 1991
                                                                  ---- ---- ----
                                                                     PERCENT
      <S>                                                         <C>  <C>  <C>
      Discount rate.............................................. 7.25 8.75 8.95
      Rate of salary progression................................. 5.00 5.00 5.00
      Long-term rate of return on assets......................... 9.50 9.50 9.50
</TABLE>
 
  Lyondell and LCR also maintain voluntary defined contribution Capital
Accumulation and Savings plans for eligible employees. Under provisions of the
plans, Lyondell and LCR contribute an amount equal to 150 percent of employee
contributions up to a maximum Lyondell or LCR contribution of 6 percent of the
employee's base salary for the Capital Accumulation plans and 200 percent of
employee contributions up to a maximum Lyondell or LCR contribution of 2
percent of the employee's base salary for the Savings plans. Lyondell and LCR
contributions to these plans totaled $8 million in 1993, $7 million in 1992 and
$7 million in 1991.
 
16. POSTRETIREMENT BENEFITS OTHER THAN PENSIONS
 
  Lyondell and LCR sponsor unfunded defined benefit postretirement plans other
than pensions that cover both salaried and non-salaried employees which provide
medical and life insurance benefits. The postretirement health care plans are
contributory while the life insurance plans are non-contributory. Currently,
Lyondell and LCR pay approximately 80 percent of the cost of the health care
plans, but reserve the right to modify the cost-sharing provisions at any time.
 
  The following table sets forth the plans' separate postretirement benefit
liabilities as of December 31, 1993 and 1992:
 
<TABLE>
<CAPTION>
                                                       1993          1992
                                                   ------------  ------------
                                                   MEDICAL LIFE  MEDICAL LIFE
                                                   ------- ----  ------- ----
                                                      MILLIONS OF DOLLARS
   <S>                                             <C>     <C>   <C>     <C>
   Accumulated postretirement benefit obligation:
     Retirees.....................................  $ (2)  $(1)   $ (2)
     Fully eligible active plan participants......    (5)   (1)     (3)  $(1)
     Other active plan participants...............   (37)   (6)    (23)   (4)
                                                    ----   ---    ----   ---
                                                     (44)   (8)    (28)   (5)
   Unrecognized net loss..........................    12     2      --    --
                                                    ----   ---    ----   ---
   Accrued postretirement benefit liability.......  $(32)  $(6)   $(28)  $(5)
                                                    ====   ===    ====   ===
</TABLE>
 
                                      F-15
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  Net periodic postretirement benefit costs for 1993 and 1992 included the
following components:
 
<TABLE>
<CAPTION>
                                                          1993         1992
                                                      ------------ ------------
                                                      MEDICAL LIFE MEDICAL LIFE
                                                      ------- ---- ------- ----
                                                         MILLIONS OF DOLLARS
   <S>                                                <C>     <C>  <C>     <C>
   Service cost--benefits attributed to service dur-
    ing the period..................................    $ 2          $ 2
   Interest cost on accumulated postretirement bene-
    fit obligation..................................      3   $ 1      2   $ 1
                                                        ---   ---    ---   ---
   Net periodic postretirement benefit cost.........    $ 5   $ 1    $ 4   $ 1
                                                        ===   ===    ===   ===
</TABLE>
 
  For measurement purposes, the assumed annual rate of increase in the per
capita cost of covered health care benefits was 13 percent for 1993-1996, 9
percent for 1997-2001, and 6 percent thereafter. The health care cost trend
rate assumption has a significant effect on the amounts reported. To
illustrate, increasing the assumed health care cost trend rates by one
percentage point in each year would increase the accumulated postretirement
benefit liability as of December 31, 1993 by $10 million and the net periodic
postretirement benefit cost for the year then ended by $1 million.
 
  The accumulated postretirement benefit obligation was calculated utilizing a
weighted-average discount rate of 7.25 percent and 8.75 percent at December 31,
1993 and 1992, respectively, and an average rate of salary progression of 5
percent in each year. Lyondell and LCR's current policy is to fund the
postretirement health care and life insurance plans on a pay-as-you-go basis.
 
17. INCOME TAXES
 
  Effective January 1, 1992, the Company changed its method of accounting for
income taxes from the deferred method to the liability method required by SFAS
No. 109, "Accounting for Income Taxes" (see Note 4). As permitted under the new
standard, prior years' financial statements have not been restated.
 
  During 1993, the Company increased its provision for deferred income taxes by
$3 million due to an increase in the federal corporate income tax rate from 34
percent to 35 percent effective January 1, 1993. Significant components of the
Company's provision for income taxes attributable to continuing operations
follows:
 
<TABLE>
<CAPTION>
                                                              LIABILITY  DEFERRED
                                                               METHOD     METHOD
                                                              ---------  --------
                                                              1993 1992    1991
                                                              ---- ----  --------
                                                                 MILLIONS OF
                                                                   DOLLARS
      <S>                                                     <C>  <C>   <C>
      Current
        Federal.............................................. $ 5  $ 6     $ 89
        State................................................  --    1       10
                                                              ---  ---     ----
          Total current......................................   5    7       99
      Deferred
        Federal..............................................   2    4       17
        State................................................   5   (2)       1
                                                              ---  ---     ----
          Total deferred.....................................   7    2       18
                                                              ---  ---     ----
                                                              $12  $ 9     $117
                                                              ===  ===     ====
</TABLE>
 
                                      F-16
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  Prior to the change in accounting methods, the components of the Company's
provision for deferred income taxes for the year ended December 31, 1991 were
as follows (millions of dollars):
 
<TABLE>
      <S>                                                                   <C>
      Depreciation and amortization........................................ $19
      Other................................................................  (1)
                                                                            ---
                                                                            $18
                                                                            ===
</TABLE>
 
  Deferred income taxes reflect the net tax effects of temporary differences
between the carrying amounts of assets and liabilities for financial reporting
purposes and the amounts used for income tax purposes. Significant components
of the Company's deferred tax liabilities and assets as of December 31, 1993
and 1992 are as follows:
 
<TABLE>
<CAPTION>
                                                                      1993 1992
                                                                      ---- ----
                                                                      MILLIONS
                                                                         OF
                                                                       DOLLARS
   <S>                                                                <C>  <C>
   Deferred tax liabilities:
     Tax over book depreciation...................................... $126 $106
     Change in accounting method for turnarounds.....................    6   --
     LIFO inventory..................................................    8    3
                                                                      ---- ----
       Total deferred tax liabilities................................  140  109
                                                                      ---- ----
   Deferred tax assets:
     OPEB obligation.................................................   13   12
     Environmental and other long-term liabilities...................   12   10
     Alternative minimum tax credit receivable.......................    7    2
     Other...........................................................   11    6
                                                                      ---- ----
       Total deferred tax assets.....................................   43   30
                                                                      ---- ----
         Net deferred tax liabilities................................ $ 97 $ 79
                                                                      ==== ====
</TABLE>
 
  Pretax income from continuing operations for the years ended December 31,
1993, 1992 and 1991 was taxed under domestic jurisdictions only.
 
  The reconciliation of income tax attributable to continuing operations
computed at the U.S. federal statutory tax rates to the Company's effective tax
rates follows:
 
<TABLE>
<CAPTION>
                                                         LIABILITY   DEFERRED
                                                          METHOD      METHOD
                                                         ----------  ---------
                         DESCRIPTION                     1993  1992  1991
                         -----------                     ----  ----  ----
      <S>                                                <C>   <C>   <C>   
      U.S. statutory income tax rates................... 35.0% 34.0% 34.0%
      State income taxes, net of federal................ 19.3  (1.5)  2.3
      Company owned life insurance......................  3.8  (2.1)   --
      Deferred tax liability rate change................ 15.6    --    --
      Other, net........................................ (0.6) (3.1) (1.7)
                                                         ----  ----  ----
        Effective income tax rate....................... 73.1% 27.3% 34.6%
                                                         ====  ====  ====
</TABLE>
 
18. COMMITMENTS AND CONTINGENCIES
 
  The Company has various purchase commitments for materials, supplies and
services incident to the ordinary conduct of business. In the aggregate, such
commitments are not at prices in excess of current market.
 
                                      F-17
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
  In connection with the transfer of assets and liabilities from ARCO to the
Company, the Company agreed to assume certain liabilities arising out of the
operation of the Company's integrated petrochemical and petroleum processing
business prior to July 1, 1988. In connection with the transfer of such
liabilities, the Company and ARCO entered into an agreement (Cross-Indemnity
Agreement) whereby the Company has agreed to defend and indemnify ARCO against
certain uninsured claims and liabilities which ARCO may incur relating to the
operation of the business of the Company prior to July 1, 1988, including
certain liabilities which may arise out of pending and future lawsuits.
 
  ARCO indemnified the Company under the Cross-Indemnity Agreement with respect
to other claims or liabilities and other matters of litigation not related to
the assets or business included in the consolidated financial statements. ARCO
has also indemnified the Company for all federal taxes which might be assessed
upon audit of the operations of the Company included in the consolidated
financial statements prior to January 12, 1989, and for all state and local
taxes for the period prior to July 1, 1988.
 
  In addition to lawsuits for which the Company has indemnified ARCO, the
Company is also subject to various lawsuits and proceedings. Subject to the
uncertainty inherent in all litigation, management believes the resolution of
these proceedings will not have a material adverse effect upon the Company's
operations.
 
  The Company's policy is to be in compliance with all applicable environmental
laws. The Company is subject to extensive environmental laws and regulations
concerning emissions to the air, discharges to surface and subsurface waters
and the generation, handling, storage, transportation, treatment and disposal
of waste materials. Some of these laws and regulations are subject to varying
and conflicting interpretations. In addition, the Company cannot accurately
predict future developments, such as increasingly strict requirements of
environmental laws, inspection and enforcement policies and compliance costs
therefrom which might affect the handling, manufacture, use, emission or
disposal of products, other materials or hazardous and non-hazardous waste.
 
  Subject to the terms of the Cross-Indemnity Agreement, the Company is
currently contributing funds to the cleanup of two waste sites (French Ltd. and
Brio, both of which are located near Houston, Texas) under the Comprehensive
Environmental Response, Compensation and Liability Act (CERCLA) as amended and
the Superfund Amendments and Reauthorization Act of 1986. The Company is also
subject to certain assessment and remedial actions at the Refinery under the
Resource Conservation and Recovery Act (RCRA). In addition, the Company has
negotiated an order with the Texas Water Commission, now the Texas Natural
Resource Conservation Commission (TNRCC), for assessment and remediation of
groundwater and soil contamination at the Refinery.
 
  The Company has accrued $24 million related to future CERCLA, RCRA and TNRCC
assessment and remediation costs, of which $7 million is included in current
liabilities while the remaining amounts are expected to be incurred over the
next three to seven years. However, it is possible that new information about
the sites for which the reserve has been established, or future developments
such as involvement in other CERCLA, RCRA, TNRCC or other comparable state law
investigations could require the Company to reassess its potential exposure
related to environmental matters.
 
  In the opinion of management, any liability arising from these matters will
not have a material adverse effect on the consolidated financial condition of
the Company, although the resolution in any reporting period of one or more of
these matters could have a material impact on the Company's results of
operations for that period.
 
                                      F-18
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
19. SEGMENT INFORMATION
 
  As discussed in Note 3, the refining operations of the Company were
contributed to LCR effective July 1, 1993. Prior to July 1, 1993, the
petrochemical and refining operations of the Company were considered to be a
single segment due to the integrated nature of their operations. However, these
operations are now considered to be separate segments due to the formation of
LCR and the related separate management and operations of that entity.
 
  The Petrochemical segment consists of olefins, including ethylene, propylene,
butadiene, butylenes and specialty products; polyolefins, including
polypropylene and low density polyethylene; aromatics produced at the
Channelview Complex, including benzene and toluene; methanol and refinery
blending stocks.
 
 
  The refining segment is primarily composed of the LCR venture (see Note 3)
and consists of refined petroleum products, including gasoline, heating oil and
jet fuel; aromatics produced at the Refinery, including benzene, toluene,
paraxylene and orthoxylene; lubricants; olefins feedstocks and crude oil
resales. Crude oil resales consist of revenues from the resale of previously
purchased crude oil and from locational exchanges of crude oil that are settled
on a cash basis. Crude oil exchanges and resales facilitate the operation of
the Company's petroleum processing business by allowing the Company to optimize
the crude oil feedstock mix in response to market conditions and refinery
maintenance turnarounds and also to reduce transportation costs. Crude oil
resales amounted to $401 million, $893 million and $1,308 million for years
ended December 31, 1993, 1992 and 1991, respectively.
 
  Consolidated sales to CITGO totaled $864 million in 1993, $282 million in
1992 and $181 million in 1991. No other customer accounted for 10 percent or
more of consolidated sales.
 
                                      F-19
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
  Summarized below is the segment data for the Company which includes certain
pro forma adjustments necessary to present the petrochemical and refining
operations as individual segments for periods prior to the formation of LCR.
These adjustments relate principally to allocations of costs and expenses
between the two segments and are based on current operating agreements between
the Company and LCR. Intersegment sales between petrochemical and refining
segments include olefins feedstocks produced at the Refinery and gasoline and
fuel oil blending stocks produced at the Channelview Complex and were made at
prices based on current market values.
 
<TABLE>
<CAPTION>
                         PETROCHEMICAL REFINING
                            SEGMENT    SEGMENT  UNALLOCATED ELIMINATIONS CONSOLIDATED
                         ------------- -------- ----------- ------------ ------------
                                             MILLIONS OF DOLLARS
<S>                      <C>           <C>      <C>         <C>          <C>
1993
Sales and other
 operating revenues:
  Customers.............    $1,326      $2,524                              $3,850
  Intersegment..........       180         237                 $(417)           --
                            ------      ------                 -----        ------
                             1,506       2,761                  (417)        3,850
                            ------      ------                 -----        ------
Cost of sales...........     1,412       2,632                  (417)        3,627
Selling, general and
 administrative
 expenses...............        37          48     $ 45           --           130
                            ------      ------     ----        -----        ------
Operating income........    $   57      $   81     $(45)       $  --        $   93
                            ======      ======     ====        =====        ======
Depreciation and
 amortization expense...    $   44      $   13     $  1                     $   58
                            ======      ======     ====                     ======
Capital expenditures....    $   14      $   54     $  1                     $   69
                            ======      ======     ====                     ======
Identifiable assets.....    $  688      $  514     $ 68        $ (39)       $1,231
                            ======      ======     ====        =====        ======
1992
Sales and other
 operating revenues:
  Customers.............    $1,409      $3,400                              $4,809
  Intersegment..........       266         334                 $(600)           --
                            ------      ------                 -----        ------
                             1,675       3,734                  (600)        4,809
                            ------      ------                 -----        ------
Cost of sales...........     1,536       3,642                  (600)        4,578
Selling, general and
 administrative
 expenses...............        37          43     $ 47           --           127
                            ------      ------     ----        -----        ------
Operating income........    $  102      $   49     $(47)       $  --        $  104
                            ======      ======     ====        =====        ======
Depreciation and
 amortization expense...    $   33      $    5     $  1                     $   39
                            ======      ======     ====                     ======
Capital expenditures....    $   43      $   53     $  1                     $   97
                            ======      ======     ====                     ======
Identifiable assets.....    $  716      $  346     $153                     $1,215
                            ======      ======     ====                     ======
1991
Sales and other
 operating revenues:
  Customers.............    $1,666      $4,069                              $5,735
  Intersegment..........       293         455                 $(748)           --
                            ------      ------                 -----        ------
                             1,959       4,524                  (748)        5,735
                            ------      ------                 -----        ------
Cost of sales...........     1,711       4,247                  (748)        5,210
Selling, general and
 administrative
 expenses...............        35          42     $ 49           --           126
                            ------      ------     ----        -----        ------
Operating income........    $  213      $  235     $(49)       $  --        $  399
                            ======      ======     ====        =====        ======
Depreciation and
 amortization expense...    $   34      $    4     $  1                     $   39
                            ======      ======     ====                     ======
Capital expenditures....    $   21      $   21     $  1                     $   43
                            ======      ======     ====                     ======
Identifiable assets.....    $  754      $  390     $335                     $1,479
                            ======      ======     ====                     ======
</TABLE>
 
                                      F-20
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
20. UNAUDITED QUARTERLY RESULTS
 
<TABLE>
<CAPTION>
                                                   QUARTER ENDED
                                      -----------------------------------------
                                                JUNE
                                      MARCH 31   30    SEPTEMBER 30 DECEMBER 31
                                      -------- ------  ------------ -----------
                                        MILLIONS OF DOLLARS EXCEPT PER SHARE
                                                      AMOUNTS
<S>                                   <C>      <C>     <C>          <C>
1993(*)
- -------
  Sales and other operating revenues.  $1,065  $1,080     $  885      $  820
  Operating income...................       7       5         38          43
  Income (loss) before income taxes
   and cumulative effect of
   accounting changes................     (10)    (14)        18          22
  Income (loss) before cumulative
   effect of accounting changes......      (8)    (11)         9          14
  Cumulative effect of accounting
   changes, net of tax...............      22      --         --          --
  Net income (loss)..................      14     (11)         9          14
  Earnings (loss) per share before
   cumulative effect of accounting
   changes...........................    (.09)   (.14)       .12         .17
  Earnings (loss) per share..........     .18    (.14)       .12         .17
1992(*)
- -------
  Sales and other operating revenues.  $1,029  $1,221     $1,336      $1,223
  Operating income (loss)............      (5)     33         33          43
  Income (loss) before income taxes
   and cumulative effect of
   accounting changes................     (22)     15         17          25
  Income (loss) before cumulative
   effect of accounting changes......     (14)     10         12          18
  Cumulative effect of accounting
   changes, net of tax...............     (10)     --         --          --
  Net income (loss)..................     (24)     10         12          18
  Earnings (loss) per share before
   cumulative effect of accounting
   changes...........................    (.17)    .13        .15         .22
  Earnings (loss) per share..........    (.29)    .13        .15         .22
</TABLE>
- --------
(*) The 1992 quarterly results have been restated to reflect the adoption
    during the fourth quarter of 1992, of accounting changes which were
    effective January 1, 1992. In addition, the first two quarters of 1993 and
    all four quarters of 1992 include certain pro forma adjustments necessary
    to present the petrochemical and refining operations as individual segments
    for periods prior to the formation of LCR effective July 1, 1993.
 
                                      F-21
<PAGE>
 
                     INDEPENDENT ACCOUNTANTS' REVIEW REPORT
 
To the Stockholders and Board of Directors
of Lyondell Petrochemical Company
 
  We have reviewed the accompanying condensed consolidated balance sheet of
Lyondell Petrochemical Company as of June 30, 1994, the related condensed
consolidated statement of income for the three-month and six-month periods
ended June 30, 1994 and 1993 and the related condensed consolidated statement
of cash flows for the six-month periods ended June 30, 1994 and 1993. These
financial statements are the responsibility of the Company's management.
 
  We conducted our review in accordance with standards established by the
American Institute of Certified Public Accountants. A review of interim
financial information consists principally of applying analytical procedures to
financial data and making inquiries of persons responsible for financial and
accounting matters. It is substantially less in scope than an audit conducted
in accordance with generally accepted auditing standards, the objective of
which is the expression of an opinion regarding the financial statements taken
as a whole. Accordingly, we do not express such an opinion.
 
  Based on our review, we are not aware of any material modifications that
should be made to the accompanying condensed consolidated financial statements
for them to be in conformity with generally accepted accounting principles.
 
  We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheet as of December 31, 1993, and the
related consolidated statements of income and accumulated deficit, and cash
flows for the year then ended; and in our report dated February 11,1994, we
expressed an unqualified opinion on those consolidated financial statements. In
our opinion, the information set forth in the accompanying condensed
consolidated balance sheet as of December 31, 1993, is fairly stated, in all
material respects, in relation to the consolidated balance sheet from which it
has been derived.
 
                                          Coopers & Lybrand
 
Houston, Texas
July 25, 1994
 
                                      F-22
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
                        CONSOLIDATED STATEMENT OF INCOME
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                  FOR THE
                                                   THREE
                                                  MONTHS        FOR THE SIX
                                                ENDED JUNE     MONTHS ENDED
                                                    30,          JUNE 30,
                                                ------------   --------------
                                                1994   1993     1994    1993
                                                ----  ------   ------  ------
                                                   MILLIONS OF DOLLARS
                                                EXCEPT PER SHARE AMOUNTS
<S>                                             <C>   <C>      <C>     <C>
SALES AND OTHER OPERATING REVENUES:
  Unrelated parties............................ $818  $1,003   $1,573  $1,999
  Related parties..............................   82      77      151     146
                                                ----  ------   ------  ------
                                                 900   1,080    1,724   2,145
OPERATING COSTS AND EXPENSES:
  Cost of sales:
    Unrelated parties..........................  727     970    1,409   1,933
    Related parties............................   67      70      121     136
  Selling, general and administrative expenses.   35      35       69      64
                                                ----  ------   ------  ------
                                                 829   1,075    1,599   2,133
                                                ----  ------   ------  ------
  Operating income.............................   71       5      125      12
Interest expense...............................  (19)    (19)     (37)    (37)
Interest income................................    1      --        2       1
Minority interest in LYONDELL-CITGO Refining
 Company Ltd...................................   (2)     --       (5)     --
                                                ----  ------   ------  ------
  Income (loss) before income taxes and
   cumulative effect of accounting changes.....   51     (14)      85     (24)
Income tax provision (benefit).................   19      (3)      31      (5)
                                                ----  ------   ------  ------
  INCOME (LOSS) BEFORE CUMULATIVE EFFECT OF
   ACCOUNTING CHANGES..........................   32     (11)      54     (19)
Cumulative effect on prior years of accounting
 changes.......................................   --      --       --      22
                                                ----  ------   ------  ------
  NET INCOME (LOSS)............................ $ 32  $  (11)  $   54  $    3
                                                ====  ======   ======  ======
EARNINGS (LOSS) PER SHARE:
  Income (loss) before cumulative effect of
   accounting changes.......................... $.40  $ (.14)  $  .68  $ (.23)
  Cumulative effect on prior years of
   accounting changes..........................   --      --       --     .27
                                                ----  ------   ------  ------
  Net income (loss)............................ $.40  $ (.14)  $  .68  $  .04
                                                ====  ======   ======  ======
</TABLE>
 
           See notes to consolidated financial statements--unaudited.
 
                                      F-23
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
                           CONSOLIDATED BALANCE SHEET
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                          JUNE 30, DECEMBER 31,
                                                            1994       1993
                                                          -------- ------------
                         ASSETS
                         ------                            MILLIONS OF DOLLARS
<S>                                                       <C>      <C>
Current assets:
  Cash and cash equivalents..............................  $   35     $   40
  Restricted cash and cash equivalents (Note 3)..........      45         73
  Short-term investments (Note 3)........................      12          6
  Accounts receivable:
    Trade................................................     220        179
    Related parties......................................      32         25
  Inventories............................................     184        191
  Prepaid expenses and other current assets..............      14          9
                                                           ------     ------
    Total current assets.................................     542        523
                                                           ------     ------
Fixed assets:
  Property, plant and equipment..........................   2,629      2,545
  Less accumulated depreciation and amortization.........   1,913      1,890
                                                           ------     ------
                                                              716        655
Deferred charges and other assets........................      50         53
                                                           ------     ------
Total assets.............................................  $1,308     $1,231
                                                           ======     ======
<CAPTION>
          LIABILITIES AND STOCKHOLDERS' DEFICIT
          -------------------------------------
<S>                                                       <C>      <C>
Current liabilities:
  Accounts payable:
    Trade................................................  $  249     $  203
    Related parties......................................       2          4
  Notes payable..........................................      --          4
  Current maturities of long-term debt...................      10          8
  Other accrued liabilities..............................      67         80
                                                           ------     ------
    Total current liabilities............................     328        299
                                                           ------     ------
Long-term debt...........................................     707        717
Other liabilities and deferred credits...................      86         78
Deferred income taxes....................................     101        101
Commitments and contingencies (Note 6)
Minority interest........................................     156        124
Stockholders' equity (deficit):
  Common stock, $1 par value, 250,000,000 shares autho-
   rized, 80,000,000 issued and outstanding..............      80         80
  Additional paid-in capital.............................     158        158
  Accumulated deficit....................................    (308)      (326)
                                                           ------     ------
    Total stockholders' deficit..........................     (70)       (88)
                                                           ------     ------
Total liabilities and stockholders' deficit..............  $1,308     $1,231
                                                           ======     ======
</TABLE>
 
           See notes to consolidated financial statements--unaudited.
 
                                      F-24
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                     FOR THE
                                                                       SIX
                                                                     MONTHS
                                                                      ENDED
                                                                    JUNE 30,
                                                                    ----------
                                                                    1994  1993
                                                                    ----  ----
                                                                    MILLIONS
                                                                       OF
                                                                     DOLLARS
<S>                                                                 <C>   <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income....................................................... $ 54  $  3
  Adjustments to reconcile net income to net cash provided by
   operating activities:
    Cumulative effect of accounting changes, net of tax............   --   (22)
    Depreciation and amortization..................................   29    28
    Deferred taxes.................................................    4     1
    Net change in accounts receivable, inventories and accounts
     payable.......................................................   (2)   34
    Net change in other working capital accounts...................  (22)  (17)
    Minority interest..............................................    5    --
    Other..........................................................    4    10
                                                                    ----  ----
      Net cash provided by operating activities....................   72    37
                                                                    ----  ----
CASH FLOWS FROM INVESTING ACTIVITIES:
  Minority owner contribution......................................   28    --
  Additions to fixed assets........................................  (79)  (28)
  Purchases of short-term investments..............................  (19)   --
  Proceeds from sales of short-term investments....................   13    13
                                                                    ----  ----
      Net cash used in investing activities........................  (57)  (15)
                                                                    ----  ----
CASH FLOWS FROM FINANCING ACTIVITIES:
  Net repayments of short-term debt................................   (4)   --
  Repayments of long-term debt.....................................   (8)  (29)
  Dividends paid...................................................  (36)  (72)
                                                                    ----  ----
      Net cash used in financing activities........................  (48) (101)
                                                                    ----  ----
DECREASE IN CASH, RESTRICTED CASH AND CASH EQUIVALENTS.............  (33)  (79)
Cash, restricted cash and cash equivalents at beginning of period..  113   108
                                                                    ----  ----
Cash, restricted cash and cash equivalents at end of period........ $ 80  $ 29
                                                                    ====  ====
</TABLE>
 
           See notes to consolidated financial statements--unaudited.
 
 
                                      F-25
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--UNAUDITED
 
1. BASIS OF PREPARATION
 
  The accompanying unaudited consolidated financial statements have been
prepared in accordance with generally accepted accounting principles for
interim financial information and with the instructions to Form 10-Q and Rule
10-01 of Regulation S-X. Accordingly, they do not include all of the
information and footnotes required by generally accepted accounting principles
for complete financial statements. In the opinion of management, all
adjustments, consisting only of normal, recurring adjustments considered
necessary for a fair presentation, have been included. For further information,
refer to the consolidated financial statements and notes thereto for the year
ended December 31, 1993 included in the Lyondell Petrochemical Company
(Company) 1993 Annual Report and the Annual Report on Form 10-K pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934. The year-end
condensed balance sheet data was derived from audited financial statements but
does not include all disclosures required by generally accepted accounting
principles. Certain amounts from prior periods have been reclassified to
conform to current period presentation.
 
2. ACCOUNTING CHANGES
 
  In May 1993 the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 115, "Accounting for Certain Investments in
Debt and Equity Securities" (Statement). The Company adopted the provisions of
the Statement for investments held as of or acquired after January 1, 1994. In
accordance with the Statement, prior period financial statements have not been
restated to reflect the change in accounting principle. The effect of adopting
the Statement had no impact on income.
 
  In the first quarter of 1993, effective January 1, 1993, the Company changed
its method of accounting for the cost of repairs and maintenance incurred in
connection with turnarounds of major units at its manufacturing facilities.
Under the new method, turnaround costs exceeding $5 million are deferred and
amortized on a straight-line basis until the next planned turnaround, generally
four to six years. In prior years, all turnaround costs were expensed as
incurred. The Company believes that the new method of accounting is preferable
in that it provides for a better matching of turnaround costs with future
product revenues. The cumulative effect of this accounting change for years
prior to 1993 resulted in a benefit of $33 million ($22 million or $.27 per
share after income taxes), and was included in first quarter 1993 income.
 
3. RESTRICTED FUNDS
 
  As of June 30, 1994 and December 31, 1993, cash in the amount of $45 million
and $73 million, respectively, was restricted for use in connection with
LYONDELL-CITGO Refining Company Ltd. (LCR) capital projects, including the
Refinery upgrade project, and other expenditures as determined by the LCR
owners. At June 30, 1994 and December 31, 1993, in addition to restricted cash,
all short-term investments were restricted for use in connection with LCR
capital projects, including the Refinery upgrade project, and other
expenditures as determined by the LCR owners.
 
  Presented below is a reconciliation of changes in restricted funds, including
amounts classified as short-term investments, for the six-month period ended
June 30, 1994:
 
<TABLE>
<S>                                                                       <C>
Restricted-cash, cash equivalents and short-term investments at December
 31, 1993................................................................ $ 79
Minority owner investments:
  Contributions..........................................................   28
  Reinvestments..........................................................    6
Additions to fixed assets:
  Refinery upgrade project...............................................  (28)
  Refining segment-other.................................................  (28)
                                                                          ----
Restricted-cash, cash equivalents and short-term investments at June 30,
 1994.................................................................... $ 57
                                                                          ====
</TABLE>
 
                                      F-26
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--UNAUDITED--(CONTINUED)
4. INVESTMENTS
 
  As of June 30,1994, the Company held approximately $84 million of investments
in debt securities composed primarily of commercial paper, including $72
million classified as cash equivalents. As of January 1, 1994, the Company held
approximately $70 million of investments in debt securities composed primarily
of commercial paper, including $64 million classified as cash equivalents. The
cost of securities held at June 30, 1994 and January 1, 1994 approximated their
estimated fair value and were classified as available-for-sale.
 
  The Company realized no gains or losses on sales of securities during the
six-month period ended June 30, 1994. All securities held by the Company as of
June 30, 1994 have remaining maturities of less than one year. At June 30, 1994
and December 31, 1993, in addition to restricted cash, all short-term
investments were restricted for use in connection with LCR capital projects,
including the Refinery upgrade project, and other expenditures as determined by
the LCR owners.
 
5. INVENTORIES
 
  The categories of inventory and their book values at June 30, 1994 and
December 31, 1993 were:
 
<TABLE>
<CAPTION>
                                                                       1994 1993
                                                                       ---- ----
                                                                       MILLIONS
                                                                          OF
                                                                        DOLLARS
      <S>                                                              <C>  <C>
      Crude oil....................................................... $ 46 $ 68
      Refined products................................................   23   29
      Petrochemicals..................................................   75   57
      Materials and supplies..........................................   40   37
                                                                       ---- ----
                                                                       $184 $191
                                                                       ==== ====
</TABLE>
 
6. COMMITMENTS AND CONTINGENCIES
 
  The Company has various purchase commitments for materials, supplies and
services incident to the ordinary conduct of business. In the aggregate, such
commitments are not at prices in excess of current market.
 
  In connection with the transfer of assets and liabilities from ARCO to the
Company, the Company agreed to assume certain liabilities arising out of the
operation of the Company's integrated petrochemical and petroleum processing
business prior to July 1, 1988. In connection with the transfer of such
liabilities, the Company and ARCO entered into an agreement (Cross-Indemnity
Agreement) whereby the Company has agreed to defend and indemnify ARCO against
certain uninsured claims and liabilities which ARCO may incur relating to the
operation of the business of the Company prior to July 1, 1988, including
certain liabilities which may arise out of pending and future lawsuits.
 
  ARCO indemnified the Company under the Cross-Indemnity Agreement with respect
to other claims or liabilities and other matters of litigation not related to
the assets or business included in the consolidated financial statements. ARCO
has also indemnified the Company for all federal taxes which might be assessed
upon audit of the operations of the Company included in the consolidated
financial statements prior to January 12, 1989, and for all state and local
taxes for the period prior to July 1, 1988.
 
  In addition to lawsuits for which the Company has indemnified ARCO, the
Company is also subject to various lawsuits and proceedings. Subject to the
uncertainty inherent in all litigation, management
 
                                      F-27
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--UNAUDITED--(CONTINUED)
believes the resolution of these proceedings will not have a material adverse
effect upon the Company's operations.
 
  The Company's policy is to be in compliance with all applicable environmental
laws. The Company is subject to extensive environmental laws and regulations
concerning emissions to the air, discharges to surface and subsurface waters
and the generation, handling, storage, transportation, treatment and disposal
of waste materials. Some of these laws and regulations are subject to varying
and conflicting interpretations. In addition, the Company cannot accurately
predict future developments, such as increasingly strict requirements of
environmental laws, inspection and enforcement policies and compliance costs
therefrom which might affect the handling, manufacture, use, emission or
disposal of products, other materials or hazardous and non-hazardous waste.
 
  Subject to the terms of the Cross-Indemnity Agreement, the Company is
currently contributing funds to ARCO for the cleanup of two waste sites (French
Ltd. and Brio, both of which are located near Houston, Texas) under the
Comprehensive Environmental Response, Compensation and Liability Act (CERCLA)
as amended and the Superfund Amendments and Reauthorization Act of 1986. The
Company is also subject to certain assessment and remedial actions at the
Refinery under the Resource Conservation and Recovery Act (RCRA). In addition,
the Company has negotiated an order with the Texas Natural Resource
Conservation Commission (TNRCC), formerly the Texas Water Commission, for
assessment and remediation of groundwater and soil contamination at the
Refinery.
 
  The Company has accrued $19 million related to future CERCLA, RCRA and TNRCC
assessment and remediation costs, of which $2 million is included in current
liabilities while the remaining amounts are expected to be incurred over the
next three to seven years. However, it is possible that new information about
the sites for which the reserve has been established, or future developments
such as involvement in other CERCLA, RCRA, TNRCC or other comparable state law
investigations, could require the Company to reassess its potential exposure
related to environmental matters.
 
  From April 1993 to June 1994, two process waste water streams at the
Channelview Complex were not in compliance with applicable Benzene National
Emissions Standards for Hazardous Air Pollutants (NESHAPS) regulations. After
learning that these streams were not controlled in accordance with the Benzene
NESHAPS regulations, Company employees determined that the streams did not
create a discernible impact on health or safety and achieved compliance with
the regulations. The Company estimates that it will incur approximately $1
million in capital costs in connection with these waste water streams to
achieve on-going compliance with the Benzene NESHAPS regulations. The Company
notified the TNRCC and the EPA that the two streams were not controlled in
accordance with the Benzene NESHAPS regulations. On June 6, 1994, the Company
received a Notice of Violation from the TNRCC regarding the two streams. In an
initial enforcement conference the TNRCC has indicated that it intends to
proceed with an administrative enforcement action, and the Company expects that
the TNRCC will impose an administrative fine.
 
  In the opinion of management, any liability arising from these matters will
not have a material adverse effect on the consolidated financial condition of
the Company, although the resolution in any reporting period of one or more of
the matters discussed in this note could have a material impact on the
Company's results of operations for that period.
 
7. DIVIDENDS
 
  On June 15, 1994, the Company paid a regular quarterly dividend of $0.225 per
share to stockholders of record on May 20, 1994. Additionally, on July 22,
1994, the Board of Directors declared a regular quarterly dividend of $0.225
per share of common stock payable September 15, 1994 to stockholders of record
on August 12, 1994.
 
                                      F-28
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--UNAUDITED--(CONTINUED)
 
8. EARNINGS PER SHARE
 
  Earnings per share for all periods presented are computed based on the
weighted average number of shares outstanding for the periods, which was
80,000,000 shares.
 
9. SUBSEQUENT EVENT
 
  Effective July 1, 1994, LCR elected to replace its $100 million revolving
credit facility with a $70 million revolving credit facility with substantially
similar terms. No amounts were outstanding under the previous credit facility
as of June 30, 1994. The new credit facility may be extended at the request of
LCR upon consent of the bank group.
 
10. SEGMENT INFORMATION
 
  Summarized below is the segment data for the Company which includes certain
pro forma adjustments necessary to present the petrochemical and refining
operations as individual segments for periods prior to the commencement of LCR
operations on July 1, 1993. These adjustments relate principally to allocations
of costs and expenses between the two segments and are based on current
agreements between the Company and LCR. The refining segment is primarily
composed of LCR operations. Intersegment sales between petrochemical and
refining segments include olefins feedstocks produced at the Refinery and
gasoline blending stocks produced at the Channelview Complex and were made at
prices that are based on current market values.
 
<TABLE>
<CAPTION>
                                            THREE MONTHS       SIX MONTHS
                                           ENDED JUNE 30,    ENDED JUNE 30,
                                           ----------------  ----------------
                                            1994     1993     1994     1993
                                           ------- --------  -------  -------
                                                (MILLIONS OF DOLLARS)
      <S>                                  <C>     <C>       <C>      <C>
      Sales and other operating revenues:
        Petrochemical segment............. $  439  $    400   $  823   $  790
        Refining segment..................    570       789    1,105    1,603
        Intersegment sales................   (109)     (109)    (204)    (248)
                                           ------  --------  -------  -------
                                           $  900  $  1,080  $ 1,724  $ 2,145
                                           ======  ========  =======  =======
      Cost of sales:
        Petrochemical segment............. $  362  $    393  $   697  $   762
        Refining segment..................    541       756    1,037    1,555
        Intersegment purchases............   (109)     (109)    (204)    (248)
                                           ------  --------  -------  -------
                                           $  794  $  1,040  $ 1,530  $ 2,069
                                           ======  ========  =======  =======
      Selling, general and administrative
       expense:
        Petrochemical segment............. $    9  $      9  $    19  $    18
        Refining segment..................     14        12       27       22
        Unallocated.......................     12        14       23       24
                                           ------  --------  -------  -------
                                           $   35  $     35  $    69  $    64
                                           ======  ========  =======  =======
      Operating income:
        Petrochemical segment............. $   68  $     (2) $   107  $    10
        Refining segment..................     15        21       41       26
        Unallocated.......................    (12)      (14)     (23)     (24)
                                           ------  --------  -------  -------
                                           $   71  $      5  $   125  $    12
                                           ======  ========  =======  =======
</TABLE>
 
                                      F-29
<PAGE>
 
                         LYONDELL PETROCHEMICAL COMPANY
 
       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--UNAUDITED--(CONTINUED)
 
  Summarized below are intersegment sales for the two segments.
 
<TABLE>
<CAPTION>
                                                  THREE MONTHS     SIX MONTHS
                                                 ENDED JUNE 30,  ENDED JUNE 30,
                                                 --------------- ---------------
                                                  1994    1993    1994    1993
                                                 ------- ------- ------- -------
                                                      (MILLIONS OF DOLLARS)
   <S>                                           <C>     <C>     <C>     <C>
   Petrochemical segment........................ $    53 $    44    $ 97    $110
   Refining segment.............................      56      65     107     138
                                                 ------- ------- ------- -------
                                                    $109    $109    $204    $248
                                                 ======= ======= ======= =======
</TABLE>
 
                                      F-30
<PAGE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN SO AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR ANY OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS UN-
LAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE AN IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF OR THE INFORMATION
CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Available Information.....................................................    2
Incorporation of Certain Documents by Reference...........................    2
Prospectus Summary........................................................    3
Certain Investment Considerations.........................................    6
Price Range of Common Stock and Dividends.................................   11
Capitalization............................................................   12
Selected Financial Data...................................................   13
Management's Discussion and Analysis of Financial Condition and Results of
 Operations...............................................................   14
Financial Matters.........................................................   24
The Company...............................................................   27
Management................................................................   46
Relationship with ARCO....................................................   51
Security Ownership by ARCO................................................   56
Description of Capital Stock..............................................   57
Certain United States Federal Tax Consequences for Non-United States
 Holders of Common Stock..................................................   58
Plan of Distribution......................................................   60
Certain Legal Matters.....................................................   63
Experts...................................................................   63
Financial Information.....................................................  F-1
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                               35,000,000 SHARES
 
                     LOGO Lyondell Petrochemical Company
 
                                  COMMON STOCK
                          (PAR VALUE $1.00 PER SHARE)
 
                           ------------------------
                                   PROSPECTUS
                           ------------------------
 
 
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
 
PAGE WHERE
GRAPHIC               DESCRIPTION OF GRAPHIC OR CROSS-REFERENCE
APPEARS
- -------------------------------------------------------------------------------
TX]33                 PLANT INTEGRATION CHART

                      This graph illustrates the integration of the Company's
                      two petrochemical manufacturing facilities and LCR's
                      Refinery. It identifies the primary feedstocks and primary
                      products for each of the three facilities and identifies
                      (i) the refinery products used as olefins feedstocks; (ii)
                      the Channelview Complex olefins by-products used at the
                      Refinery; and (iii) the Channelview Complex olefins
                      products used as feedstocks for the production of
                      polyolefins at the Bayport Facility.
                      
<PAGE>

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN
OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF OR THE INFORMATION
CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.
 
                                ---------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Available Information......................................................   2
Documents Incorporated by Reference........................................   2
Special Considerations Relating to
 Exchangeable Notes........................................................   3
Atlantic Richfield Company.................................................   4
Use of Proceeds............................................................   6
Lyondell Petrochemical Company.............................................   6
Relationship Between ARCO and Lyondell.....................................   8
Capitalization (Unaudited).................................................   9
Selected Financial Data....................................................  10
Ratio of Earnings to Fixed Charges.........................................  10
Price Range of Lyondell Common Stock and Dividends.........................  11
Description of the Exchangeable Notes......................................  11
Certain United States Federal Income Tax Considerations....................  18
Underwriting...............................................................  21
Experts....................................................................  23
Legal Opinions.............................................................  23
</TABLE>
 
<TABLE>
<S>                                                                 <C>
Prospectus Relating to Common Stock of Lyondell Petrochemical
 Company............................................................ Appendix A
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
 
                         35,000,000 EXCHANGEABLE NOTES
 
 
                          ATLANTIC RICHFIELD COMPANY
                             
                          9% EXCHANGEABLE NOTES     
                             
                          DUE SEPTEMBER 15, 1997     
 
 
 
                                ---------------
                                [LOGO OF ARCO]
                                ---------------
 
 
                             GOLDMAN, SACHS & CO.
 
                              MERRILL LYNCH & CO.
 
                             SALOMON BROTHERS INC
                  
                      REPRESENTATIVES OF THE UNDERWRITERS 
 

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                 [ALTERNATE PAGE FOR INTERNATIONAL PROPSECTUS]

       
                         35,000,000 EXCHANGEABLE NOTES
 
                          ATLANTIC RICHFIELD COMPANY
 
[LOGO OF ARCO]

                  
               9% EXCHANGEABLE NOTES DUE SEPTEMBER 15, 1997     
(SUBJECT TO EXCHANGE INTO SHARES OF COMMON STOCK, PAR VALUE $1.00 PER SHARE,
OF LYONDELL PETROCHEMICAL COMPANY)
                                --------------
  Of the 35,000,000 Exchangeable Notes offered, 5,000,000 Exchangeable Notes
are being offered hereby in an international offering outside the United
States and 30,000,000 Exchangeable Notes are being offered in a concurrent
United States offering. The initial public offering price and the aggregate
underwriting discount per Exchangeable Note will be identical for both
offerings. See "Underwriting."
   
  The principal amount of each of the 9% Exchangeable Notes due September 15,
1997 of Atlantic Richfield Company ("ARCO") being offered hereby will be
$24.75 (the closing price of the common stock, par value $1.00 per share, of
Lyondell Petrochemical Company on August 1, 1994, as reported on the New York
Stock Exchange Composite Tape) (the "Initial Price"). The Exchangeable Notes
will mature on September 15, 1997. Interest on the Exchangeable Notes, at the
rate of 9% of the principal amount per annum, is payable quarterly in arrears
on March 15, June 15, September 15 and December 15, beginning September 15,
1994. Exchangeable Notes are not subject to redemption or any sinking fund
prior to maturity.     
   
  At maturity (including as a result of acceleration or otherwise), the
principal amount of each Exchangeable Note will be mandatorily exchanged by
ARCO into a number of shares of Lyondell Common Stock (or, at ARCO's option,
cash with an equal value) at the Exchange Rate. The Exchange Rate is equal to,
subject to certain adjustments, (a) if the Maturity Price per share of
Lyondell Common Stock is greater than or equal to $27.72 per share of Lyondell
Common Stock (the "Threshold Appreciation Price"), .8929 shares of Lyondell
Common Stock per Exchangeable Note, (b) if the Maturity Price is less than the
Threshold Appreciation Price but is greater than the Initial Price, a
fractional share of Lyondell Common Stock per Exchangeable Note so that the
value thereof at the Maturity Price equals the Initial Price and (c) if the
Maturity Price is less than or equal to the Initial Price, one share of
Lyondell Common Stock per Exchangeable Note. The "Maturity Price" means the
average Closing Price per share of Lyondell Common Stock on the 20 Trading
Days immediately prior to maturity. Accordingly, holders of the Exchangeable
Notes will not necessarily receive an amount equal to the principal amount
thereof. The Exchangeable Notes will be unsecured obligations of ARCO ranking
pari passu with all of its other unsecured and unsubordinated indebtedness.
Lyondell will have no obligations with respect to the Exchangeable Notes. See
"Description of the Exchangeable Notes."     
 
  Attached hereto as Appendix A and included as part of this Prospectus is a
prospectus of Lyondell covering the shares of Lyondell Common Stock which may
be received by a holder of Exchangeable Notes at maturity. The Lyondell
prospectus relates to an aggregate of 39,921,400 shares of Lyondell Common
Stock.
 
  PROSPECTIVE INVESTORS ARE ADVISED TO CONSIDER CAREFULLY THE INFORMATION
CONTAINED UNDER "SPECIAL CONSIDERATIONS RELATING TO EXCHANGEABLE NOTES."
 
  For a discussion of certain United States federal income tax consequences
for holders of Exchangeable Notes, see "Certain United States Federal Income
Tax Considerations."
 
  The Lyondell Common Stock is listed on the New York Stock Exchange ("NYSE")
under the symbol LYO.
   
  The Exchangeable Notes have been approved for listing on the NYSE under the
symbol "LYX."     
       
       
                                --------------
     THESE SECURITIES  HAVE  NOT BEEN  APPROVED OR  DISAPPROVED  BY THE
      SECURITIES  AND  EXCHANGE  COMMISSION OR  ANY  STATE  SECURITIES
        COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR
         ANY STATE  SECURITIES COMMISSION PASSED UPON  THE ACCURACY
          OR  ADEQUACY OF THIS  PROSPECTUS. ANY REPRESENTATION  TO
            THE CONTRARY IS A CRIMINAL OFFENSE.
                                --------------
<TABLE>
<CAPTION>
                                            PRICE TO   UNDERWRITING PROCEEDS TO
                                           PUBLIC (1)  DISCOUNT (2) ARCO (1) (3)
                                           ----------  ------------ ------------
<S>                                       <C>          <C>          <C>
Per Exchangeable Note....................    $24.75       $0.75        $24.00
Total (4)................................ $866,250,000 $26,250,000  $840,000,000
</TABLE>
- -------
   
(1) Plus accrued interest, if any, from August 8, 1994.     
(2) ARCO and the Company have agreed to indemnify the Underwriters against
    certain liabilities, including liabilities under the Securities Act of
    1933.
(3) Before deducting expenses payable by ARCO estimated to be $3,500,000.
   
(4) ARCO has granted the Underwriters an option, exercisable within 30 days
    from the date hereof, to purchase up to an additional 4,921,400
    Exchangeable Notes at the Price to Public, less Underwriting Discount, for
    the purpose of covering over-allotments, if any. If the Underwriters
    exercise such option in full, the total Price to Public, Underwriting
    Discount, and Proceeds to ARCO will be $988,054,650, $29,941,050 and
    $958,113,600, respectively. See "Underwriting."     
                                --------------
   
  The Exchangeable Notes are offered subject to receipt and acceptance by the
International Underwriters, to prior sale and to their right to reject any
order in whole or in part and to withdraw, cancel or modify the offer without
notice. It is expected that certificates for the Exchangeable Notes will be
ready for delivery in New York, New York, on or about August 8, 1994.     
 
GOLDMAN SACHS INTERNATIONAL
                      MERRILL LYNCH INTERNATIONAL LIMITED
                                         SALOMON BROTHERS INTERNATIONAL LIMITED
 
                                --------------
                 
              The date of this Prospectus is August 1, 1994.     
<PAGE>
 
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]
 
                             AVAILABLE INFORMATION
 
  ARCO is subject to the informational requirements of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), and in accordance therewith files
reports with the Securities and Exchange Commission (the "Commission").
Reports, proxy statements, and other information filed by ARCO with the
Commission pursuant to the informational requirements of the Exchange Act can
be inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549, Seven World Trade Center, 13th Floor, New York, New York 10048 and
Chicago Regional Office, Northwestern Atrium Center, 500 West Madison Street,
Suite 1400, Chicago, Illinois 60661-2511. Copies of such material can also be
obtained upon written request addressed to the Securities and Exchange
Commission, Public Reference Section, Room 1024, 450 Fifth Street, N.W.,
Washington, D.C. 20549 at prescribed rates. Such reports, proxy statements and
other information can also be inspected at the offices of the New York Stock
Exchange, on which one or more of ARCO's securities are listed.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
  ARCO incorporates herein by this reference the following documents filed
pursuant to the Exchange Act, which also have been filed with the Commission
(File No. 1-1196):
 
    (a) ARCO's Annual Report on Form 10-K for the year ended December 31,
  1993;
 
    (b) ARCO's Current Reports on Form 8-K dated March 28, 1994 and July 25,
  1994; and
 
    (c) ARCO's Report on Form 10-Q for the quarterly period ended March 31,
  1994.
 
  All documents filed by ARCO pursuant to Sections 13(a), 13(c), 13(d), 14 and
15(d) of the Exchange Act after the date hereof and prior to the termination of
the offering of the Exchangeable Notes offered hereby (collectively with the
documents referenced above the " '34 Act Reports") shall be deemed to be
incorporated by reference herein and to be a part hereof from the date of
filing of such documents.
 
  ARCO WILL FURNISH WITHOUT CHARGE TO EACH PERSON, INCLUDING ANY BENEFICIAL
OWNER, TO WHOM THIS PROSPECTUS IS DELIVERED, UPON WRITTEN OR ORAL REQUEST OF
SUCH PERSON, A COPY OF ANY AND ALL OF THE '34 ACT REPORTS INCORPORATED HEREIN
BY REFERENCE (NOT INCLUDING EXHIBITS TO SUCH REPORTS, UNLESS SUCH EXHIBITS ARE
SPECIFICALLY INCORPORATED BY REFERENCE INTO SUCH REPORTS) AND ANY OTHER
DOCUMENTS SPECIFICALLY IDENTIFIED HEREIN AS INCORPORATED BY REFERENCE INTO THE
REGISTRATION STATEMENT TO WHICH THIS PROSPECTUS RELATES, OR INTO ANOTHER '34
ACT REPORT OF ARCO. REQUESTS SHOULD BE ADDRESSED TO: JUNE WORTH, SECURITIES
REGULATION COORDINATOR, ATLANTIC RICHFIELD COMPANY, 515 SOUTH FLOWER STREET,
LOS ANGELES, CALIFORNIA 90071 (TELEPHONE: 213-486-1450).
 
                                --------------
 
  ANY STATEMENT CONTAINED IN A DOCUMENT ALL OR A PORTION OF WHICH IS
INCORPORATED OR DEEMED TO BE INCORPORATED BY REFERENCE HEREIN SHALL BE DEEMED
TO BE MODIFIED OR SUPERSEDED FOR PURPOSES OF THIS PROSPECTUS TO THE EXTENT THAT
A STATEMENT CONTAINED HEREIN OR IN ANY OTHER SUBSEQUENTLY FILED DOCUMENT WHICH
ALSO IS OR IS DEEMED TO BE INCORPORATED BY REFERENCE HEREIN MODIFIES OR
SUPERSEDES SUCH STATEMENT. ANY STATEMENT SO MODIFIED SHALL NOT BE DEEMED TO
CONSTITUTE A PART OF THIS PROSPECTUS EXCEPT AS SO MODIFIED, AND ANY STATEMENT
SO SUPERSEDED SHALL NOT BE DEEMED TO CONSTITUTE PART OF THIS PROSPECTUS.
 
                                --------------
 
  THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF
AN OFFER TO BUY THE EXCHANGEABLE NOTES IN ANY JURISDICTION IN WHICH SUCH OFFER
OR SOLICITATION IS UNLAWFUL. THERE ARE RESTRICTIONS ON THE OFFER AND SALE OF
THE EXCHANGEABLE NOTES IN THE UNITED KINGDOM. ALL APPLICABLE PROVISIONS OF THE
FINANCIAL SERVICES ACT 1986 AND THE COMPANIES ACT 1985 WITH RESPECT TO ANYTHING
DONE BY ANY PERSON IN RELATION TO THE EXCHANGEABLE NOTES, IN, FROM OR OTHERWISE
INVOLVING THE UNITED KINGDOM MUST BE COMPLIED WITH. SEE "UNDERWRITING."
 
  IN THIS PROSPECTUS, REFERENCE TO "DOLLARS", "U.S.$" AND "$" ARE TO UNITED
STATES DOLLARS.
 
                                --------------
 
  IN CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE EXCHANGEABLE
NOTES AND THE LYONDELL COMMON STOCK AT LEVELS ABOVE THOSE WHICH MIGHT OTHERWISE
PREVAIL IN THE OPEN MARKET. SUCH TRANSACTIONS MAY BE EFFECTED ON THE NEW YORK
STOCK EXCHANGE OR OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE
DISCONTINUED AT ANY TIME.
 
                                       2
<PAGE>
 
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]
 
BACKUP WITHHOLDING AND INFORMATION REPORTING
 
  A holder of the Exchangeable Notes may be subject to information reporting
and to backup withholding at a rate of 31 percent of certain amounts paid to
the holder unless such holder provides proof of an applicable exemption or a
correct taxpayer identification number, and otherwise complies with applicable
requirements of the backup withholding rules. Backup withholding is not an
additional tax. Any amounts withheld under the backup withholding rules will
be refunded or credited against such holder's United States federal income tax
liability, provided that required information is furnished to the IRS.
 
                                 UNDERWRITING
 
  Subject to the terms and conditions of the Underwriting Agreement, ARCO has
agreed to sell to each of the International Underwriters named below, and each
of such International Underwriters, for whom Goldman Sachs International,
Merrill Lynch International Limited and Salomon Brothers International Limited
are acting as representatives, has severally agreed to purchase from ARCO, the
respective number of Exchangeable Notes set forth opposite its name below:
 
<TABLE>
<CAPTION>
                                                                     NUMBER OF
                                                                    EXCHANGEABLE
                               UNDERWRITER                             NOTES
                               -----------                          ------------
      <S>                                                           <C>
      Goldman Sachs International..................................  1,148,000
      Merrill Lynch International Limited .........................  1,146,000
      Salomon Brothers International Limited.......................  1,146,000
      Deutsche Bank AG London......................................    200,000
      Societe Generale.............................................    200,000
      Swiss Bank Corporation.......................................    200,000
      UBS Limited..................................................    200,000
      S.G. Warburg Securities Ltd. ................................    200,000
      ABN AMRO Bank N.V. ..........................................     40,000
      Barclays de Zoete Wedd Limited...............................     40,000
      BMO Nesbitt Thomson Ltd. ....................................     40,000
      BNP Capital Markets Limited..................................     40,000
      CS First Boston Limited......................................     40,000
      Dresdner Bank Aktiengesellschaft.............................     40,000
      Robert Fleming & Co. Limited.................................     40,000
      NatWest Securities Limited...................................     40,000
      Nikko Europe Plc.............................................     40,000
      N M Rothschild & Sons Limited................................     40,000
      J.Henry Schroder Wagg & Co. Limited..........................     40,000
      ScotiaMcLeod Inc. ...........................................     40,000
      The Toronto-Dominion Bank....................................     40,000
      Westdeutsche Landesbank Girozentrale.........................     40,000
                                                                     ---------
        Total......................................................  5,000,000
                                                                     =========
</TABLE>
 
  Under the terms and conditions of the Underwriting Agreement, the
International Underwriters are committed to take and pay for all of the
Exchangeable Notes offered hereby, if any are taken.
   
  The International Underwriters propose to offer the Exchangeable Notes in
part directly to the public at the initial public offering price set forth on
the cover page of the ARCO Prospectus, and in part to certain securities
dealers at such price less a concession of $0.45 per Exchangeable Note. The
International Underwriters may allow, and each of such dealers may reallow, a
concession not exceeding $0.10 per Exchangeable Note to certain dealers and
brokers. After the Exchangeable Notes are released for sale to the public, the
offering price and the other selling terms may from time to time be varied by
the representatives.     
 
                                      21
<PAGE>
 
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]
 
  ARCO has entered into an underwriting agreement (the "U.S. Underwriting
Agreement") with the underwriters of the U.S. Offering (the "U.S.
Underwriters") providing for the concurrent offer and sale of 30,000,000
Exchangeable Notes in an offering in the United States. The initial public
offering price and underwriting discount per Exchangeable Note for the two
offerings are identical. The closing of the offering made hereby is a condition
to the closing of the U.S. Offering, and vice versa. The representatives of the
U.S. Underwriters are Goldman Sachs & Co., Merrill Lynch, Pierce, Fenner &
Smith Incorporated and Salomon Brothers Inc.
 
  Pursuant to an Agreement between the U.S. and International Underwriting
Syndicates (the "Agreement Between") relating to the two offerings, each of the
International Underwriters named herein has agreed that, as a part of the
distribution of the Exchangeable Notes offered hereby and subject to certain
exceptions, it will (i) not, directly or indirectly, offer, sell or deliver
Exchangeable Notes (a) in the United States of America (including the States
and the District of Columbia), its territories, its possessions and other areas
subject to its jurisdiction (the "United States") or to any U.S. persons, which
term shall mean, for purposes of this paragraph: (x) any individual who is a
resident of the United States or (y) any corporation, partnership or other
entity organized in or under the laws of the United States or any political
subdivision thereof and whose office most directly involved with the purchase
is located in the United States, or (b) to any person whom it believes intends
to reoffer, resell or deliver the Exchangeable Notes in the United States or to
any U.S. persons, and (ii) cause any dealer to whom it may sell such
Exchangeable Notes at any concession to agree to observe a similar restriction.
Each of the U.S. Underwriters has agreed pursuant to the Agreement Between
that, as a part of the U.S. Offering and subject to certain exceptions, it will
offer, sell or deliver the Exchangeable Notes, directly or indirectly, only in
the United States and to U.S. persons.
 
  Pursuant to the Agreement Between, sales may be made between the
International Underwriters and the U.S. Underwriters of such number of
Exchangeable Notes as may be mutually agreed. The price of any Exchangeable
Notes so sold shall be the initial public offering price, less than an amount
not greater than the selling concession.
 
  ARCO has granted the International Underwriters an option exercisable for 30
days after the date of this Prospectus to purchase up to an aggregate of
750,000 additional Exchangeable Notes to cover over-allotments, if any. If the
International Underwriters exercise their over-allotment option, the
International Underwriters have severally agreed, subject to certain
conditions, to purchase approximately the same percentage thereof that the
number of Exchangeable Notes to be purchased by each of them, as shown in the
foregoing table, bears to the 5,000,000 Exchangeable Notes offered. The
International Underwriters may exercise such option only to cover over-
allotments in connection with the sale of the 5,000,000 Exchangeable Notes
offered. ARCO has granted the U.S. Underwriters an option exercisable for 30
days to purchase up to an aggregate of 4,171,400 additional Exchangeable Notes,
solely to cover over-allotments, at the initial public offering price less the
underwriting discount, as set forth on the cover page of the Prospectus.
 
  ARCO and Lyondell have agreed that during the period beginning from the date
of the ARCO Prospectus and continuing to and including the date 120 days after
the date of the ARCO Prospectus, subject to certain exceptions set forth in the
Underwriting Agreement and the U.S. Underwriting Agreement, they will not
offer, sell, contract to sell or otherwise dispose of any shares of Common
Stock of Lyondell or securities convertible into Common Stock of Lyondell
without the prior written consent of the representatives.
 
  The Exchangeable Notes will be a new issue of securities with no established
trading market. The representatives have advised ARCO that they intend to make
a market in the Exchangeable Notes but will not be obligated to do so and may
discontinue any market making at any time without notice. No assurance can be
given as to the liquidity of the trading market for the Exchangeable Notes.
 
                                       22
<PAGE>
 
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]
 
  Each International Underwriter has agreed that (i) it has not offered or
sold, and it will not offer or sell, in the United Kingdom, by means of any
document, any Exchangeable Notes other than to persons whose ordinary business
it is to buy or sell shares or debentures, whether as principal or agent, or in
circumstances which do not constitute an offer to the public within the meaning
of the Companies Act 1985 of Great Britain, (ii) it has complied, and will
comply, with all applicable provisions of the Financial Services Act of 1986 of
Great Britain with respect to anything done by it in connection with the
offering of the Exchangeable Notes in, from or otherwise involving the United
Kingdom, and (iii) it will issue or pass on to any person in the United Kingdom
any document in connection with such offering only to a person who is of a kind
described in Article 9(3) of the Financial Services Act 1986 (Investment
Advertisements) (Exemptions) Order 1988 of Great Britain or is a person to whom
the document may otherwise lawfully be issued or passed on.
 
  ARCO and Lyondell have agreed to indemnify the several Underwriters against
certain liabilities, including liabilities under the Securities Act of 1933.
 
                                    EXPERTS
 
  The consolidated financial statements of ARCO, appearing in ARCO's Annual
Report on Form 10-K for the year ended December 31, 1993, have been audited by
Coopers & Lybrand, independent accountants, as set forth in their report
included therein, and are incorporated by reference herein in reliance upon
such report and upon the authority of such Firm as experts in accounting and
auditing.
 
                                 LEGAL OPINIONS
 
  The legality of the Exchangeable Notes registered hereby has been passed upon
for ARCO by Ronald C. Redcay, Esq., Acting General Counsel of Atlantic
Richfield Company, 515 South Flower Street, Los Angeles, California 90071.
Certain other legal matters related to the Exchangeable Notes offered hereby
will be passed upon for ARCO by Diane A. Ward, Esq., Senior Counsel, Securities
& Finance, of Atlantic Richfield Company, 515 South Flower Street, Los Angeles,
CA 90071. As of July 1, 1994, Mr. Redcay owned 7,646 options to purchase shares
of Common Stock of ARCO and Ms. Ward owned 547 options to purchase shares, and
706 shares of Common Stock of ARCO all held pursuant to ARCO's employee benefit
plans. The legality of the Exchangeable Notes offered hereby will be passed
upon for the Underwriters by Cravath, Swaine & Moore, New York, New York.
Cravath, Swaine & Moore provides legal services to ARCO from time to time and
is currently doing so on certain matters relating to ARCO's investment in
Lyondell.
 
 
                                       23
<PAGE>

                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]
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  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF OR THE INFORMATION
CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.
 
                                ---------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Available Information......................................................   2
Documents Incorporated by Reference........................................   2
Special Considerations Relating to
 Exchangeable Notes........................................................   3
Atlantic Richfield Company.................................................   4
Use of Proceeds............................................................   6
Lyondell Petrochemical Company.............................................   6
Relationship Between ARCO and Lyondell.....................................   8
Capitalization (Unaudited).................................................   9
Selected Financial Data....................................................  10
Ratio of Earnings to Fixed Charges.........................................  10
Price Range of Lyondell Common Stock and Dividends.........................  11
Description of the Exchangeable Notes......................................  11
Certain United States Federal Income Tax Considerations....................  18
Underwriting...............................................................  21
Experts....................................................................  23
Legal Opinions.............................................................  23
</TABLE>
 
<TABLE>
<S>                                                                 <C>
Prospectus Relating to Common Stock of Lyondell Petrochemical 
 Company............................................................ Appendix A
</TABLE>
 
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                         35,000,000 EXCHANGEABLE NOTES
 
 
                          ATLANTIC RICHFIELD COMPANY
                             
                          9% EXCHANGEABLE NOTES     
                             
                          DUE SEPTEMBER 15, 1997     
 
 
 
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                                [LOGO OF ARCO]
                                ---------------
 
 
                          GOLDMAN SACHS INTERNATIONAL
 
                      MERRILL LYNCH INTERNATIONAL LIMITED
 
                     SALOMON BROTHERS INTERNATIONAL LIMITED


 
                      REPRESENTATIVES OF THE UNDERWRITERS
 
 
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